Shape Up - What's the Pros and Cons?

I want to talk about shape up a bit, because i keep seeing you to eat these things. I know you're doing shaped pitches for folks, and you've said to me that you feel like doing the shaping work every so often keeps you from having to continuously design stuff or like plan stuff or priortized things. What kind of help your san a has been? For me, it's helpful. The fundamental piece of it that i i've always liked, really believed in since like my agency days, is fixed time, flexible scope is like a really powerful way to build things and actually get things done.