system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] Had Thanos tried to collect the Stones peacefully, would anyone have even noticed or cared?

Let's say he collected the stones through trades, money, favors, etc. Without using any violence at all.

Without telling anyone he had already collected the previous ones.

Could he have done this and completed his mission successfully without anyone caring or even noticing?
gpt
He only knew the Space stone was on Earth because Loki told him, the Reality stone was revealed after Dark World and was in the hand of the collector, who wouldn't trade it for anything because there's literally nothing rarer. Time stone was in the Sorcerer Supreme's hand and she's not insane to give it up. The Power stone he tried getting in secret, but Ronan betrayed him. The Soul stone's location was only known by Gamora, and nothing but violence would get her to talk.

Even without those factors, he was infamous for his half-genocides that he can't move around without the galaxy looking at him. He only decided to attack when he knew where most of them were and could reach them before anybody could react.