Fascinating how this is actually something I was taught in my middle-school years' improv theatre classes! You ALWAYS want to add onto the scenario that others are helping you create by never saying "no", and replacing BUT with AND. Funny how I was willing to follow that instruction as a kid, but it wasn't until reading this post as adult that I truly understood the purpose in such activities was to focus on always having a growth or acceptance mindset. Not useful only for theatre, folks :)