Earlier quoted context omitted.
How can you review if you don‘t know in the first place? You can watch your doctor, your plumber, your car mechanic and still wouldn’t know if they di something wrong if you don’t know the subject as such.
You can learn a lot from watching your doctor, plumber or mechanic work, and you could learn even more if you could ask them questions for hours without making them mad.
Bob the Builder doesn't convey much about drainage needs for foundations and few children think to ask. Who knows how AI-Bob might respond.