Forex may be chaotic...but some things are still predictable

I was just reading this post over at Trader Rich's Forex Project about a study at MIT that concluded that "treasury bonds are random, the stock market is correlated, and forex is chaotic." Firstly, let me say I haven't actually read the study in question, and probably never will. What I have read is Rich's summary of the study author's summary of his findings in Currency Trader Magazine. Also I've never studied chaos theory, higher math or physics. So obviously I'm extremely well-qualified to comment on this research in a thoughtful, informed, and in-depth manner. So here goes...

While I agree that a lot of forex market activity appears chaotic, and as soon as you come up with a predictive rule the market breaks it, there are still a few things you can predict with some accuracy amid all the chaos. And these are the things that keep me trading forex. Off the top of my head, they are:

Trading range: I can say with reasonable confidence that the trading range of the EUR/USD tomorrow will be somewhere between 30 and 150 pips. Occasionally it may be more, occasionally less. But it will almost certainly not be 500 pips. Or 1000 pips. Nor will it flatline and refuse to move at all. Now a currency whose range varied from 10 to 1000 pips a day on a fairly unpredictable basis...that would be chaotic.

Reaction to certain news events: some events will move the market. Period. What direction, and how many pips, can be hard to prediect. But I can predict with a high degree of confidence that there will continue to be news events that shake things up periodically.

Periodic emergence of trends: very real, very tradeable trends will emerge from the chaos every so often, and in all likelihood will continue to do so. Just looking at a price chart without a single fancy indicator on it can tell you this.

If you place trades long enough you'll eventually get one right. This is the principle behind the Martingale strategy. I'm not saying it's a good strategy to use, but it's based on a statistically valid and predictable observation. Chaos or no chaos, the odds will eventually swing in your favor.

Buying some currency pairs pays you interest. Holding others costs you interest. This is what carry trading is all about.

Someone who routinely takes on too much risk when trading in chaotic conditions probably won't last as long as someone who knows exactly how much risk they can afford to take.

Someone with a clear head can combine observations like these into a trading strategy with decent odds of paying off in the long run. Someone whose outlook is clouded by wishful thinking, impatience, inconsistency, lack of discipline or impulse control, and any other problems of the compulsive gambler doesn't have a chance in the world.

Forex can be boring for long periods. Whether that's chaotic or not I can't really say. But it's certainly predictable.

I'm sure the chaos theorists wouldn't disagree with any of this, and would point out why chaos theory allows for all of these possibilities. But I'm not writing for them - I'm writing for the traders out there like me who see a statement like "forex is chaotic" and think they must be crazy to keep chasing the market if the MIT scientists say it's a giant chaotic whirlpool ready to suck your accounts dry. So if I've made any of you feel a little better, I've done my job. Enjoy the chaos!