Beware Of Lists

That wheelchair icon getting absolutely wrecked by the rocks below is basically every junior dev who thought they could just casually iterate through a list without checking for edge cases first.

You know what's coming: off-by-one errors, index out of bounds exceptions, null references hiding in there like landmines, and that one time you forgot lists are zero-indexed and spent 2 hours debugging why everything was shifted. Lists will humble you faster than a production deployment on a Friday afternoon.

The sign knows what's up. Lists are treacherous terrain. One wrong move with your iterator and you're face-first in a ConcurrentModificationException or worse—modifying the list while looping through it. The rocks don't lie.