system
Given the following post, respond as if you're commenting on Reddit:
human
[Wall-E] How does Wall-E determine which objects are valuable/important?

I  mean, he's a robot. AI and stuff... is it just thousands of years of  learning what humans had certain affinities for and sorting the items  based on that? I mean, as far as collecting spare parts for himself,  that's fundamentally logical, but as for all the little tchotchkes he  was collecting... why? And beyond that, how did he decide what was  worth collecting?
gpt
He seems to have built-in routines for collecting spare parts, storing them in a home base, cleaning or repairing the parts, and using them to perform self-repair. But collecting random things he finds pretty or interesting and watching films and other recordings of humans? That's straight-up anomalous behavior for a Wall-E unit. Still, it's interesting how the hard-coded behavior almost directly developed into the emergent behavior.

It's likely a result of adaptive behavior routines to help robots adjust to foreign environments. In Wall-E's case, his routines are running amok and he's more or less self-aware at this point. It's meant to make robots operate longer and more efficiently the older they get, but it can lead to unpredictable behavior like collecting relics that look pretty, or putting the ship on lockdown and lying to the captain, or staging a mutiny.