This chapter used two perceptrons to increase the realism of the aiming in animats, but also to allow them to deal with these errors effectively—as human players do:
Because of the simple nature of the problems (easily approximable and tolerating suboptimality), the limitations of the perceptrons are not exposed. In many cases, it's preferable to spend additional time in AI design to be able to apply single-layer perceptrons. In some cases, however, this is not possible; the additional power of multilayer perceptrons is necessary—accompanied by the extra complexity. The next chapter covers the theory behind multilayer perceptrons, paving the way for a problem in Chapter 20, "Selecting the Target," that requires better capabilities to recognize patterns.