Lesson 3 · How AI Learns
Why a pattern must be checked on brand-new examples.
Anyone can 'predict' examples they've already seen — that's just remembering. The real test of a pattern is whether it works on something new.
If an AI simply memorises its training photos, it scores 100% on them — and then flops on the very first new photo.
A true pattern generalises: it keeps working on examples the AI has never seen.
5 more parts in this lesson
Walkthroughs, code labs, mini-games and the checkpoint quiz unlock when you buy the course.