Well having done RAD/DSDM (including projects presented at the IEE) some of the bizarre rules based things scrum gets up to seem sub optimal (to be kind).
I have even done very successful hybrid projects that used Waterfall for design and built the system using RAD in 12 weeks - including doing a physical delivery.
I have even done very successful hybrid projects that used Waterfall for design and built the system using RAD in 12 weeks - including doing a physical delivery.