When I say that X became Y, I am not saying that this was the sole evolutionary path. Usually several methods converged to make a technique, and even the technique that it evolved to was around at the same time.
LaserTargeting - Originally a less processor intensive version of virtual bullets. At fire, your position and your target's position are recorded, and then the target's position is recorded again at the time the bullet should hit. From that data the appropriate firing angle can be reached. By segmenting based on the angles that are being returned this evolved into GuessFactorTargeting, and by checking the positions every tick instead of only at one point, it became Waves.
BestPSpace - The predecessor to modern GuessFactorTargeting Segmentation, using a variety of seperate maps of variables to decide which distribution yielded the best probability at a certain angle.
--Jokester