XP as I remember it was about implementing one customer-relevant feature at a time. This isn’t too-down or bottom-up, it’s doing a thin vertical slice. There sh

XP as I remember it was about implementing one customer-relevant feature at a time. This isn’t too-down or bottom-up, it’s doing a thin vertical slice. There shouldn’t be code that isn’t used or buttons that don’t work. We did work from a designer’s mockup, though.