In baseball, to catch a high ball, you must predict where it will fall. Neutrality just doesn't work.
I think the analogy of catching a high fly ball in baseball is a good one. However, the conclusion I draw from this example is a bit different that what Lundy draws.
In baseball when you are playing outfield, you pay attention to each swing of the bat, the height of the pitch, whether it is inside/outside/down the middle, the speed of the pitch, the trajectory of the swing, and the likely angle that the ball will come off the bat. So at the moment you hear the crack of the bat you instinctively know which way to run: left, right, forward or backward. However to say catching a fly ball is as simple as making a prediction then running right to the spot where the ball will come down is simply not true.
During the flight of the ball you, the outfielder must zone in on the ball's ultimate destination by making hundreds of micro corrections. You have to take into account the wind, the height of the ball's flight, its relative traveling speed, and the distance you have to run. If you overshoot you need to correct mid-stride and make split second adjustments. You have to run while keeping your eye on the ball at all times. You have to know where the wall is, how far you are from out of bounds, where the other players are, whether you need to call off another player and ultimately whether you need to catch the ball in your breadbasket, dive or pull up short and let the ball fall in to protect an extra base hit, or any number of variations. And as you run to make the final few strides, you run on your tiptoes so that you maintain a level body height while running so that you can perfectly see the ball into your glove. If you take your eye off the ball for even a split second as you're abou to catch the ball you will probably drop the ball and the official scorer will record an E next to your name.
If you've watched Andrew Jones of the Atlanta Braves play center field you would think that being an outfielder is easy. Jones makes it look easy as he lazily one-hands the ball. But that is simply because he reacts so quickly that making the ultimate catch is easy because he made all those micro corrections so rapidly and effortlessly that he almost has time to read the newspaper before catching the ball.
I think the same thing applies to trading in many ways. Unless you put on a position and simultaneously place a stop and a profit target and then walk away, your trading is probably more like catching a fly ball than simply making a prediction and checking back after x period of time to see if you were right. Trade management is really the essence of trading IMO. "Minding the boiling pot" is way up there on the list of things that are important for a trader, but then so is "not overseasoning the soup".