“what if you had all the answers?”
Is distinct from "What would you do with a second chance?" (<- What I consider the first question of the original post, since the lemmy post title's seen before the image's text.), and the question in the image "You get turned back into a baby but you retain all your skills and memory, what do you do?"
"all your skills and memory" is not the same as "had all the answers".
It's daunting that these seemed to get conflated as synonyms, for what it suggests of that flavour of naive realism... the extreme of arrogance in equating them. ... Or maybe it's just lazy hyperbole. But given that response just then, I doubt it.