ELI5 explanation of an eso level. Please remember the only authoritative ESO level estimator is here:

Eso Level Estimator 8000

"Imagine your brain is a little rocket ship. And every time someone says something super normal and easy to understand, like '1 plus 1 is 2', your rocket doesn’t even lift off. That’s level 0 — your brain is just chillin’ on the ground, eating cookies." "But then, someone starts talking about gold turning into magic money, or mushrooms that help you think like a wizard, or aliens singing songs through your bathtub faucet — and your rocket goes WHOOSH higher and higher into the sky!" "The eso level tells you how high the rocket goes. Level 0 is like: ‘Facts!’ Level 5 is like: ‘Ooooh magic mushrooms!’ Level 10 is like: ‘ALIENS TALK TO MY TOAST!’" So when someone says something, we just check: Is the rocket still on Earth or is it doing loop-de-loops past Saturn?