One night there was a spider in the shower. I wasn’t going to use it so I just let it be. The following morning I thought it was gone. But then I noticed it was hiding in a little groove along the ceramic tiles. The surprising thing was that by the time I stepped into the shower the spider had already scaled up the wall towards the door.
The water from the shower head soon splashed everywhere, including the ledge that the spider was on.
There must be something that triggered the spider to move away from its spot - whether the time of day, sound of curtains (can they hear?), or maybe just pure boredom - but we can only make an educated guess, just like we can never truly understand the reason behind decisions made by a neural net. Guess these creatures have more in common than just nets—