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Entries in bitcoin (3)

Tuesday
Nov122013

Bitcoin's Worldview and Why It Matters

There are a few questions I’ve received in response to my post on The Rise and (Inevitable) Fall of Bitcoin that are worth elaborating on.

Do you have a stake in Bitcoin?

I have no “skin in the game,” no stake, no monetary interest in Bitcoin or a Bitcoin-based enterprise. How soon will this happen? I think this process will take a long time to play out. There has yet to be an economy developed using Bitcoin and it has been purely used as a speculative vehicle. One of the first catalysts to inspire me to read about deeper about Bitcoin, beyond the sensational headlines, was when several prominent venture capitalists expressed interest and invested in Bitcoin-based enterprises. When Silk Road was shut down, shortly thereafter, I fully bought into the argument this would help nurture the legitimacy of Bitcoin. In my hypothesis, we are in the early stages of the rise period.

About this hypothesis, what do you mean by “operating hypothesis?”

Bitcoin is something entirely new, neither seen nor tried before and as such, it is impossible to perfectly predict what its path will look like. That doesn’t mean it’s not worth developing an understanding of, and having an opinion on where it could go. It also does not mean we can’t make an educated guess as to how it should transpire, while also leaving ourselves room to be intellectually flexible enough to evolve our opinions as events play out. As Bitcoin exists today and given the possible future paths within the rules already in place, this is fully what I expect to happen.

There will always be the opportunity for outside interventions to change the path for Bitcoin. For example, someone can build a parallel network, called something like “Bitbillz” and peg its value at 1:1 with Bitcoin, while offering anyone the capacity to freely exchange their Bitcoins for Bitbillz at no cost to the one making the transaction. This new Bitbillz money can then recreate its own rules-based system for the currency and its own economic paradigm with better rules.

Why do you care?

I am really intrigued by the idea of a digital currency. It has amazing potential on many levels. Such an economic development would dramatically alter the economic landscape for many global citizens. Some of the globe's worst currencies (think Zimbabwe) are in effect a punishment on the country’s citizens. Currency crises and volatility have actual costs on the lives of many people. The success of a digital currency would have interesting implications for citizens of developed nations as well, though I think the disruptive impact is overstated by the Bitcoin demagoguery and detractors alike. A digital currency, in my opinion, would never be more than a medium through which to buy some things easier or diversify one’s currency exposure. Most importantly though, the engineered mechanics of Bitcoin are brilliant and worth expanding upon to streamline, simplify and secure e-commerce transactions for everyone. This is indeed a majorly innovative breakthrough.

The problem I have is that Bitcoin was built with such a severe, fatal flaw that it’s success would inevitably hold the potential to do more harm than good. It’s early enough in the evolution of Bitcoin to create a digital currency with fewer problems, with more staying power, and most importantly, with a better worldview.

What did you mean by “ideological nature of some of these questions?”

Bitcoin was built with a worldview, and it’s a rather unattractive one. Bitcoin is the creation of Anarcho-Capitalist aka Market Anarchist, a fringe group at the intersection of outright anarchy and the Austrian School of Economics. This is something Bitcoin advocates purposely gloss over. Bitcoin’s early history, essentially from it’s first day up until October 1 of this year, 2013, was entirely created by, used by, financed by and for anarchists. Here are the words of one the man who built the first large Bitcoin community about why he was into Bitcoins (take note of who he is appealing to):

Hackers, anarchists, and criminals have been dreaming about these days since forever. Where you can turn on your computer, browse the web anonymously, make an untraceable cash-like transaction, and have a product in your hands, regardless of what any government or authority decides... This is about real freedom. Freedom from violence, from arbitrary morals and law, from corrupt centralized authorities, and from centralization altogether. While Silk Road and Bitcoin may fade or be crushed by their enemies, we've seen what free, leaderless systems can do. You can only chop off so many heads.

Bitcoin was built for a specific purpose, and by people with a specific fringe ideology. This particular school of anarchists believe strongly in hard money, with religious fervor. Instead of trying to learn about why gold standards don’t work in reality, they purposely took the single worst characteristic of the gold standard (its inelasticity of supply) to the logical extreme. This is what happens when people are blinded by extreme adherence to an extreme ideology. I don’t know what the “perfect” currency should look like, but I think many economists from all schools would agree that Bitcoin could do a whole lot better. Given that reality, why not try to improve the entire system before building an economy on top of it?

Well even if you don’t know what a “perfect” currency, isn’t Bitcoin worth trying because it’s the best we have? And shouldn’t you have to offer at least something that would be better?

Ok I’ll throw out one possible solution for thought, which is derivative of John Maynard Keynes’ idea proposed at the first Bretton Woods conference (he called it Bancor): maybe make the previously mentioned “Bitbillz” some kind of global reserve currency, where each Bitbill is backed by a basket of all of the world’s currencies (say 15-25 of the most liquid global currencies) in proportion to their relative share of GDP? 

I plotted what a hypothetical global reserve currency would look like, priced in dollars and benchmarked to 2011 global GDP levels. It's something worth thinking about.

When some currencies are strong, others will be weak, making it a less volatile, but still liquid kind of money. Further, arbitrageurs can then impose market discipline in the same way new shares of open-ended ETFs are created: when demand for Bitbillz outstrips supply arbitrageurs can buying up the exactly proportion and value of the constituent currencies and deposit them to mine/print/create new Bitbillz. The supply would have a finite constraint (the entire global monetary base), that should grow in-line with global GDP, and with a built-in natural check on volatility. Just an idea...I would love to hear if others have even better ones. It’s a question worth asking.

Monday
Nov112013

The Rise and (Inevitable) Fall of Bitcoin

Bitcoin is receiving much attention these days for its parabolic ascent. The attention seems to stem from people’s concerns with monetary policy and the growing disdain with government intervention and oversight, generally speaking. It is no coincidence that Bitcoin’s surge this year corresponds with the growing public backlash over these large issues. To that end, Bitcoin is a great story, but is it a great idea?

A Bitcoin Economy?

The textbook definition of money holds that it must be a medium of exchange, a unit of account and a store of value. Colloquially when many say "currency" they in fact mean "money," especially with regard to Bitcoin. We will ignore the argument as to whether Bitcoin is an effective store of value given its volatility and focus purely on the philosophical question of whether Bitcoin makes sense as money. For Bitcoin to truly emerge as “money” there must be an economy with the actual transfer of goods built on top of it. In such an economy, there will be some people who “save” money. This means that some will put off consumption today for the capacity to consume at a future date.

It’s hard to project exactly how much commerce will be done on Bitcoin, or how big the “economy” will be, but we do know that venture capitalists like Fred Wilson are investing in the Bitcoin ecosystem, and Marc Andreessen has expressed interest in following suit. Further, the US government’s arrest of the Silk Road founder and crackdown on the black market drug trade via Bitcoin could help lend great legitimacy to the broader Bitcoin economy. Given the evolution of credibility and interest amongst venture capitalists to grow an economy on Bitcoin, we can presume that Bitcoin’s price today reflects a belief that an economy will in fact be able to develop.

The Monetary Mechanics of Bitcoin

Before we can answer whether Bitcoin can work as “money,” let’s talk about the mechanics behind it (and by mechanics, we will ignore the cryptography and security element and focus purely on the monetary mechanics). Here are the mechanics for how Bitcoins are created:

The reward for solving a block is automatically adjusted so that roughly every four years of operation of the Bitcoin network, half the amount of bitcoins created in the prior 4 years are created. 10,500,000 bitcoins were created in the first 4 (approx.) years from January 2009 to November 2012. Every four years thereafter this amount halves, so it will be 5,250,000 over years 4-8, 2,625,000 over years 8-12, and so on. Thus the total number of bitcoins in existence will never exceed 21,000,000.

With this informatino, we can plot exactly what the money supply of Bitcoins will look like over time:

As such, we know that somewhere around 2040, the entire supply of Bitcoins will have been “created” and that no new incremental supply of will emerge from that point, onward.

The next important feature of Bitcoins that’s important to understand is the “granularity” of the currency. As they are constructed, each Bitcoin can be broken down into denominations of up to 8 decimal places (with 0.00000001 BTC being the smallest denomination). The currency was created this way, so that as Bitcoins increase in value, people are able to make purchases with fractions of the increasingly valuable coinage, rather than needing to use whole things at a time.

Lastly, and related to the idea of granularity is the deflationary bias embedded in Bitcoins, as explained by the Bitcoin community itself:

Because of the law of supply and demand, when fewer bitcoins are available the ones that are left will be in higher demand, and therefore will have a higher value. So, as Bitcoins are lost, the remaining bitcoins will eventually increase in value to compensate. As the value of a bitcoin increases, the number of bitcoins required to purchase an item decreases. This is a deflationary economic model.
So we know that people are trying to build a real economy on Bitcoin and we know mechanically how Bitcoin is designed to work, but how does it work in practice? For the purposes of this analysis, the two features of money that are most important are its role as a medium of exchange and its role as a store of value. As an economy grows, more Bitcoins will be used in exchange for goods and services, while at the same time, some who use Bitcoin will use their currency as a store of value in order to “save” money. In theory, Bitcoin is admittedly designed to increase in value over time (ie the deflationary model of currency) and therefore, “savers” will be rewarded simply by not spending their Bitcoins. This is a problem we’ll discuss shortly, but until then, I digress.
Over the past decade, the US has a fairly low savings rate compared with the rest of the world. Americans save between 11-12% of GDP per year. If we were to apply this savings rate to Bitcoin, already knowing the future path of the Bitcoin money supply, a problem starts to emerge--were 11.5% of Bitcoins saved per year, by 2021, 95.3% of the entire supply of the currency will have been stashed away as savings rendering commerce effectively impossible. A system of credit can be built on top of the Bitcoin economy (and most likely will be built), but while this can push back the date at which savings account for too large a share of the entire economy, it can only delay the inevitable. At some point, Bitcoins saved will start to approach total Bitcoins in circulation, making commerce effectively impossible.
Bitcoin is Good as Gold
This is in fact how the gold standard worked as money for years. While there is a finite amount of gold on planet earth, humans still have yet to mine all gold, and the supply of gold accordingly increases at some kind of modest annualized rate. When the price of gold spikes, miners are incentivized to increase their exploration and production efforts, and as such, spikes in the price of gold tend to come with spikes in production. Hard-money types tend to hate the growth of the money supply, though they like gold because the supply growth is not controlled by a centralized pseudo-government actor. Because no government controls supply growth, hard-money types are able to ignore the fact that gold’s supply growth tends to be lumpy (ie how the California Gold Rush led to a rapidly increasing money supply and its subsequent end led to stagnation) in focusing on how it is largely immune to inflations.
Bitcoin and gold are similar right now in how “mining” (alongside savings) is incentivized by a rising price. The increase of supply and rising price encourage those who have “saved” to spend by offering a price that is too good to pass up. This theoretically helps maintain a balance between commerce and savings over the long-run; however, we know theory and practice often differ and we’ll soon get to why, but first, let’s talk about how Bitcoin and gold differ. With gold, we have never had to contemplate a date at which the supply in circulation stops increasing, while with Bitcoin the end of supply growth has a known date. 

Here’s how the Bitcoin community explains this problem:

Worries about Bitcoin being destroyed by deflation are not entirely unfounded. Unlike most currencies, which experience inflation as their founding institutions create more and more units, Bitcoin will likely experience gradual deflation with the passage of time. Bitcoin is unique in that only a small amount of units will ever be produced (twenty-one million to be exact), this number has been known since the project's inception, and the units are created at a predictable rate.
In fact, infinite divisibility should allow Bitcoins to function in cases of extreme wallet loss. Even if, in the far future, so many people have lost their wallets that only a single Bitcoin, or a fraction of one, remains, Bitcoin should continue to function just fine. No one can claim to be sure what is going to happen, but deflation may prove to present a smaller threat than many expect.
Also, Bitcoin users are faced with a danger that doesn't threaten users of any other currency: if a Bitcoin user loses his wallet, his money is gone forever, unless he finds it again. And not just to him; it's gone completely out of circulation, rendered utterly inaccessible to anyone. As people will lose their wallets, the total number of Bitcoins will slowly decrease.
Therefore, Bitcoin seems to be faced with a unique problem. Whereas most currencies inflate over time, Bitcoin will mostly likely do just the opposite. Time will see the irretrievable loss of an ever-increasing number of Bitcoins. An already small number will be permanently whittled down further and further. And as there become fewer and fewer Bitcoins, the laws of supply and demand suggest that their value will probably continually rise.
Thus Bitcoin is bound to once again stray into mysterious territory, because no one exactly knows what happens to a currency that grows continually more valuable. Many economists claim that a low level of inflation is a good thing for a currency, but nobody is quite sure about what might happens to one that continually deflates. Although deflation could hardly be called a rare phenomenon, steady, constant deflation is unheard of. There may be a lot of speculation, no one has any hard data to back up their claims.
That being said, there is a mechanism in place to combat the obvious consequences. Extreme deflation would render most currencies highly impractical: if a single Canadian dollar could suddenly buy the holder a car, how would one go about buying bread or candy? Even pennies would fetch more than a person could carry. Bitcoin, however, offers a simple and stylish solution: infinite divisibility. Bitcoins can be divided up and trade into as small of pieces as one wants, so no matter how valuable Bitcoins become, one can trade them in practical quantities.
In fact, infinite divisibility should allow Bitcoins to function in cases of extreme wallet loss. Even if, in the far future, so many people have lost their wallets that only a single Bitcoin, or a fraction of one, remains, Bitcoin should continue to function just fine. No one can claim to be sure what is going to happen, but deflation may prove to present a smaller threat than many expect.

Why does all this matter and what am I getting at? 

Historically there have been points in time where the propensity to save (and thus not spend) has outstripped the supply of currency available to be saved, thus choking off the flow of commerce. This is a big part of what happened in the Great Depression and is something that both Keynesians and Monetarists alike agree on. When countries “left” the gold standard, they effectively devalued their currency all at once (and it's no coincidence that the recovery from the Great Depression started with such a devaluation). This similar mechanical move has happened in the floating-currency regime whereby countries who peg their currency to a foreign currency (like Argentina’s peso pegged to the dollar), must abandon the peg with a devaluation in order to protect their currency.

What happens when too much of Bitcoin’s supply gets stashed as savings? Granularity provides a built-in answer. 1 bitcoin will be divided by 10 in its purchasing power (note: 0.1 Bitcoins is presently known as a centibitcoin). This is how spending and commerce will then return to the Bitcoin economy. The Bitcoin community argues that this will be a slow, “gradual deflation,” which is “unheard of” in world history. There is a reason for this: gradual deflation is a paradox that simply does not and cannot exist.

Remember above I told you I would eventually get to why theory and practice differ once savings exceed a certain level, and prices rise? I didn’t forget. Theory and practice diverge because theory presupposes a certain kind of human rationality that simply does not exist. When the price of a currency itself starts to rise, and supply starts to get scarce, instead of prior savers now spending money and solving the problem of too little circulating money, reality has time-and-again demonstrated that people who previously were not savers, and were engaged in commerce, see that more money was made by saving money than investing it. In response, prior commercial actors decide they too can make more money by hoarding money than they can by investing it, and upon that realization, they too turn into incrementally new savers.  John Maynard Keynes dubbed this "The Paradox of Thrift" and the incorporation of paradox in the title is self-explanatory here. This positive feedback loop of saving begetting more saving continues until some kind of breakpoint is reached. This breakpoint is either a devaluation or a complete collapse in an economy, but either way, it is not and never has been pretty. 

Considering Bitcoins are the ultimate fiat currency, backed by neither a hard asset, nor the capacity to tax, faith in the currency is immensely important, but also far easier to destroy than build up. This harkens back to Warren Buffett’s wise observation that “it takes 20 years to build a reputation and five minutes to ruin it.” Once trust is lost in Bitcoin, it will be impossible to make it back.

Again, why does it matter?

Since I am speaking about this decline as inevitable, and obvious, let me explain why I think this even warrants conversation in the first place. I think Bitcoin is a fascinating experiment that will eventually have considerable value to help improve our knowledge of monetary systems, and to help dispel some of the myths that have built up in some recently popular economic circles. With the crisis, “hard-money” like the gold standard has become a popular “solution” despite the fact that we know both empirically and theoretically exactly how and why they don’t, won’t and never could work. Paul Krugman has tried to explain this problem with his explanation of the Capitol Hill Baby-Sitting co-op and Pascal-Emmanuel Gobry has highlighted this connection with Bitcoin, but considering the ideological nature of some of these questions, such proof will never be taken as positive. Bitcoin will eventually show us this reality in real-time.

The second source of my interest in Bitcoin is the role of feedback loops and reflexive processes in markets. George Soros’ Alchemy of Finance is one of my favorite market philosophy books and one I am a believer in. The essence of Soros’ “General Theory of Reflexivity” holds that markets are driven by feedback loops whereby prices influence the course of events, which influence prices, which in turn influence the course of events. I’ll let Soros further explain:

 

Feedback loops can be either negative or positive. Negative feedback brings the participants’ views and the actual situation closer together; positive feedback drives them further apart. In other words, a negative feedback process is self-correcting. It can go on forever and if there are no significant changes in external reality, it may eventually lead to an equilibrium where the participants’ views come to correspond to the actual state of affairs. That is what is supposed to happen in financial markets…
...By contrast, a positive feedback process is self-reinforcing. It cannot go on forever because eventually the participants’ views would become so far removed from objective reality that the participants would have to recognize them as unrealistic. Nor can the iterative process occur without any change in the actual state of affairs, because it is in the nature of positive feedback that it reinforces whatever tendency prevails in the real world. Instead of equilibrium, we are faced with a dynamic disequilibrium or what may be described as far-from-equilibrium conditions. Usually in far-from-equilibrium situations the divergence between perceptions and reality leads to a climax which sets in motion a positive feedback process in the opposite direction. Such initially self-reinforcing but eventually self-defeating boom-bust processes or bubbles are characteristic of financial markets, but they can also be found in other spheres.

Understanding and spotting feedback loops in financial markets is one of the most important things an investor can do. Feedback loops are one of the sources of my interest in the Santa Fe Institute and its work on markets as a complex adaptive system (see my recent interview with Michael Mauboussin which spends some time on feedback loops). In fact, feedback loops are one of the telltale features of complexity.  It is my operating hypothesis that Bitcoin is one such “positive feedback process” which will first lead to a spectacular risein prices, that will ultimately reverse and crumble into an even more remarkable decline.

As it stands today, per my thesis, Bitcoin’s “rise” should be in the early stages. This rise has been fueled by a combination of speculation and the promise for the development of actual commerce on Bitcoin. The adoption of broader uses for the currency will be the catalyst for the next stage of ascent. I’m not sure how far Bitcoin can go on the way up, nor am I sure exactly when the inflection point from rise to fall will occur, but one thing I am fairly certain of is that when the fall comes, it will be swift and violent. In the end, it's success will be its own demise. As they say, “what goes up on an escalator goes down on an elevator” and I would not want to be the one left holding the proverbial bag on the way down.

Friday
Oct112013

Links for Thought -- October 11th, 2013

The Secrets of Shopping (Chicago Booth, Capital Ideas) -- This is one of the more interesting reads I've come across in a while. Nielson, in conjunction with Booth collected years of household purchase data on products ranging from groceries to painkillers. Some of the early analysis clearly demonstrates that without the proper knowledgebase, consumers are easily steered astray from rational decisions for behavioral reasons. This piece is amazingly informative for investors and shoppers alike.

Mogul's Plan to kill Netflix (Quartz) -- John Malone earned his fortune building a cable empire and made plenty more money dabbling in content. Now Malone is trying to use some of these lessons in order to empower the cable companies to unite (um collude) to drive down content costs and squeeze Netflix out from its successful niche as a low-cost distributor in its own right.

Eurozone debt crisis: Timeline (The Telegraph) -- Why is this timeline from 2011 relevant today? I was trying to avoid any mention of the debt ceiling this week, but here goes: today people speak of the Summer of 2011 as if the market's turmoil was entirely based on "The Debt Ceiling Crisis" when in fact, the market's gyrations were far more attuned to the very real (as opposed to manufactured) crisis that was unfolding in Europe. 

Guy Spier - Build your life in a way that suits you (Graham & Doddsville) -- Skip the needlessly apologetic feature on Koch Industries and their value and read Guy Spier's interview. Guy is one of the most self-aware investors out there in explaining how his investment process, and his role in the investment industry fits with his personality.  Many of us young up-and-comers in the industry can learn so much from someone like Guy, and we should be thankful he is open to sharing these insights as he is.

How the feds took down the Dread Pirate Roberts (ArsTechnica) -- Fascinating feature on how the FBI tracked down and built a case against the man behind Silk Road, a Bitcoin exchange often used for selling drugs. The Austrian econ/libertarian/anarchist connection to the Bitcoin story makes this even more interesting and goes to show that even in a pseudo-economy founded on the principles of fragmentation and individuality, some kind of centralization of power is inescapable 

The FBI and the legitimation of the bitcoinverse (Felix Salmon) -- Have I told you I'm fascinated by Bitcoin yet? There are so many interesting elements, ranging from crime drama to econ experiment. Here Felix talks about how the aforementioned FBI bustup of Silk Road helps legitimize Bitcoin and I cannot help but agree.  With this cleanup, and venture capitalists like Fred Wilson and Marc Andreesen taking interest, there is now a clearer path to a digital economy built on the currency. This all has great potential, until the inevitable deflationary collapse comes crashing in, but until then... (I'll have to expand on this entire theme into a blog post soon).

Bobby Orr is focused on doing good -- quietly (The Boston Globe) -- Today, when even B-listers are Twitter heroes, there is something to be said about a quiet, understated humility. Bobby Orr is one of the all-time great hockey players (and many would argue he's the single greatest), yet because he pursues his charitable and humanist endeavors in such a quiet manner, we rarely hear about his important contributions to society. Simply put, he's a great guy.

Speaking of hockey, here is Tomas Hertl, who some are calling "The Next Great One" scoring what just might stand as the goal of the season when all is said and done.