Terence Tao, UCLA professor and the most decorated mathematician alive: "Hedge funds pay $500K a year for one skill: telling a real pattern from noise. I've spent my life on it, and most people get it exactly backwards." this free lecture holds the entire "find the signal" problem those firms pay for, given at UCLA by the most decorated mathematician alive and posted for nothing. at the board it's simple. Tao's lifelong theme is that almost nothing is purely one thing. There is perfect structure, like a clock, and perfect randomness, like a coin, and essentially everything real is a mixture of the two. The work is separating them. The primes are the perfect test case: they look scattered and lawless, and yet Tao and Ben Green proved they contain arbitrarily long evenly spaced runs. Order was hiding inside apparent chaos the whole time. That's the whole "signal detection", minus the marketing. He gave this lecture at UCLA and it has been free ever since. Same point as my article above: the mathematics those firms pay half a million dollars for is public, documented and free to anyone tonight. the lecture is free and anyone can watch it. what nobody can sell you is the judgment to know when a pattern is real and when your own eyes invented it. That judgment is the entire job, and it takes years to build.