system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why can't spiders climb up the side of the bath tub?

To confirm, I didn't kill the spider, I put it outside. They're great for getting rid of pesky bugs, plus... Live and let live right?
gpt
They climb using the hairs and little microscopic hooks.  Think of it like rock climbing. If there weren't any type of way to hold on to something with your hands and feet you wouldn't be able to climb a nearly vertical wall.  Same is true for the spider.  The tub is a smooth and relatively vertical surface for them to climb.