With all the world's knowledge, you would understand and can solve any worldly problem. With all the world's knowledge, you would understand subjects like Quantum Mechanics as it relates to the world, and could know how to do things like time travel, warp relativity and space around you, teleport and all sorts of star trekish stuff. I think having all the world's knowledge ever possible would be insane.
Paris gave the apple to Aphrodite, choosing Love over Wisdom and Leadership. Love is pure, right? Better to be loved... except the Monkey's Paw was who he loved. She was no Penelope.... but then, Penelope did not have love. Not having love in her marriage, only faithfulness, allowed her to keep her country and her station, unlike her sister queen Clytemnestra who did find love.
So Paris gained Love, and lost Wisdom and Leadership. He really should have refused to hand the apple over. Or split it. Or told them he was unworthy and handed it off to Zeus.
The greeks didn't think very much of love, I guess.
Anyway, choosing knowledge doesn't mean gaining the ability to do anything with that knowledge. If you are hated, knowledge can be a curse. People will seek to kill you on some Socrates shyt because they aren't ready to hear you. Or it can turn you into an extremely pragmatic, extremely efficient sociopath. Or you might turn into a Hindu from the horror of seeing it all laid out and say 'fukk it' to anything except extinguishing your soul to escape from it all.
Maybe the Monkey's Paw is if you choose one, you can't have the rest. Like not being able to wish for more wishes.
Maybe that's how it should be approached, as a counter intellectual exercise. What can you live without?