My client wants an poster for an upcoming concert. 

Client: Well, this is fine, but…

Me: What’s wrong?

Client: Can you just take the crowd out?

Me: What? Why? I thought having the crowd in the background was one of the main concepts.

Client: Yeah, but I want the poster to look more realistic. Could you replace the crowd with a green screen?

Me: …A green screen?

Client: Yeah, so I can add in my own picture of a crowd later.

Me: To make it more realistic?

Client: Yeah.