It's definitely not some strict linear flow. Sometimes you just have a cool idea that you want to explore. You can then work backwards to find your base reality. You do need to inevitably find a base reality to really build a business.
You also don't need some 'perfect' base reality before you find some game. An improv show would be pretty boring if the characters were going into unnecessary detail about themselves, before finally finding something funny. In fact, you want to be establishing your base reality as fast as you can, with only the needed details, to leave more time for the game.
I think you're spot on that the most beautiful pieces are unexpected. I think that's a key thing that makes improv so beautiful. This is what you get by 'exploring' and 'heightening' the game, and I touched on that in the post. By building on each other's ideas with some kind of focus, you're able to go places no one expects.
You also don't need some 'perfect' base reality before you find some game. An improv show would be pretty boring if the characters were going into unnecessary detail about themselves, before finally finding something funny. In fact, you want to be establishing your base reality as fast as you can, with only the needed details, to leave more time for the game.
I think you're spot on that the most beautiful pieces are unexpected. I think that's a key thing that makes improv so beautiful. This is what you get by 'exploring' and 'heightening' the game, and I touched on that in the post. By building on each other's ideas with some kind of focus, you're able to go places no one expects.