system
Given the following post, respond as if you're commenting on Reddit:
human
[E.T.] Why did the extraterrestrials seem really worried about being discovered by humans during their initial landing, but didn't seem to care at all when they came back for E.T.?

In the beginning of the film, the extraterrestrials are really on edge as they perform their research excursion, reacting to the slightest noise. When the humans show up, they collectively panic and high-tail it off planet, leaving E.T. behind.

When they return, there's a bunch of humans milling around the landing site (including the ones who were chasing them initially!), but they don't seem to care at all.

What changed? I got the impression that they didn't want to be discovered during their research mission, but when they return they don't mind at all that humans know about their existence. Were they afraid of humans' potential violent capacity at first, but then realized they weren't a threat?
gpt
Imagine a team of human scientists travel to a nature preserve to study the local wildlife. They will be careful not to disrupt the natural balance.

Then one of the humans is injured and becomes separated from the group. They broke their sat phone and take refuge in a cave near a clan of chimpanzees. A baby chimp brings them some food and some random sticks and rocks it thinks are pretty. The human notices one of the "sticks" is actually an old antenna that fits in their sat-phone!

The human scientist repairs the phone and calls for help. Then a rescue party is formed and sent to bring the scientist home. The rescue party doesn't have any scientists in it though, that would be dangerous and could risk another getting injured. So they send appropriately trained individuals like military, police, or emergency medical services to go pick up the hapless scientist.

The rescue team cares little about disrupting the local wildlife, as long as they bring everyone home safely.