What Generative Design Actually Is
Generative design is a computational approach that explores many possible solutions to a set of already-defined objectives.
You give it parameters — site, budget, program, performance targets, constraints — and it generates a large number of options that satisfy those parameters. You then select from the results.
It is extraordinarily powerful. It can test hundreds of spatial configurations, weigh daylight against cost against circulation, and surface solutions a human might not have considered.
Generative design is powerful precisely because the objectives are already fixed.