Yes, I've seen the situation where you have a group of people looking at a close-by tree, and one person is shouting: look there is a snake. And everyone is say

Yes, I've seen the situation where you have a group of people looking at a close-by tree, and one person is shouting: look there is a snake. And everyone is saying "where, where"? I've seen this go on for 10 minutes, and people just don't see the snake. It's like some type of puzzle.