# Question for the Chair, from Jim Sogi

January 28, 2016 |

After some practice, a kid can throw a ball and compute the trajectory on the fly. It becomes internalized. Mathematically it is a complicated computation. Normally people don't think statistically unless say after 45 years of doing it it is internalized.

My question to Chair and others is whether after trading for many years using statistically based evidence you have internalized the data and math such that a trade is similar to throwing a ball. Computations of course help reject ideas, or deflate misconception, or identify newly arising cycles but what percent is intuition? Even system traders identify new systems by eyeballing data or plots or using analogies.

## Stefan Jovanovich writes:

If we are talking baseball, the throwing equations have their own internal derivatives. To throw a ball well enough to play the game at even a semi-professional level as a pitcher requires a great deal more than "some practice"; for the people who make it all the way to "the show" the internal computations get down to the questions of how much pressure you place on the joint of each toe. The calculations about how you hold the ball for each pitch are maddeningly complex; then there is what you do with your biceps, elbows, trunk, etc.

I suspect surfers have the same kind of subtlety in their thinking about what they do. But, I don't know: can't pitch, wouldn't dream of surfing. What I do know as a catcher is that pitcher's internalization process is never finished; they are flakes because they have to be.

## anonymous writes:

When surfing at the home break, most of the good locals have it pretty well wired. Knowledge of the bottom, how the surf breaks on different tides, swell direction, currents, winds, and where the wave will peak allows a local to successfully get waves. When traveling for waves, new breaks tend to present a host of different challenges. While I will never have another place wired like my local break, when visiting a different one, I'll catch a few waves, but the locals will catch many more. I find injuries are more common at other breaks, mainly because of the lack of knowledge of the wave and the lineup. An outsider never knows all of the quirks, inside rules, players, and forces at a beach.

Seems like a good time to present a market analogy. A competent local surfer generally gets more waves than a competent outsider, just like an insider or specialist in a single market generally has more opportunities than outsiders for good trades. The insider/specialist knows his market just like the surfer knows his home break.

## Jeff Watson writes:

Surfing is a good example of an intuitive process internalizing complex multiple variables. At my big wave spot I know the secret line up markers: a grass spot on the mountain, the tops of certain palm trees, a rock, some foam. It puts me in a 6 foot square in the ocean. I can see the waves in the distance, sit in a certain spot, and the wave come right to me. Someone 6 feet to the right is in the wrong spot. Newbies often get slaughtered. For example, there was a big crowd out two days ago with medium size waves when a HUGE set came thru and washed almost everyone out who were sitting on the inside.

On the rare occasion that I hit it right, I enter a trade at a good spot and ride it on most of the full move. You can feel the variables, the amount the market has fallen, its speed of trading and movement, the way its trading. The price location in relation to the last week, the last few days, the last few hours give info. When to go out and not watch. Seems like there is a lot of info being processed internally, somewhat unconsciously that has valuable input. Ideally one could quantify all these and have a computer do it with AI better than a human. The multiple variables make it hard to quantify though. I suppose some simple rules apply: after multiple 2% drops is a good time to buy or after a 50 point down move in a day on the third or fourth down day, after fake bad news, on on some stupid announcement like FOMC and the market dives 50 points for no reason. I'm sure there are more rules of thumb that one always keeps in the back of your mind, including all of Chair's caveats, and all Wiswell's proverbs. Maybe that's the point, over time one internalized all the rules, the basic setups, the data, even more complex set ups, without having to count on the fingers as its happening.