As they say, there are two rules in improv: Never say no, and never ask why. When another actor asks 'Why?' or says no to something you're suggesting, then it's very clear that they're putting the onus on you, because they're not comfortable with it themselves.
“What is the best music is impossible to define. Just because it's played by a virtuoso player, doesn't mean it's great music. It might not reflect the soul of a people, which is really my criteria for great music.”