It's not even a 6% productivity increase, it's "6% less time between builds and tests". Is that even a meaningful metric? It is also not clear to me what the c

It's not even a 6% productivity increase, it's "6% less time between builds and tests". Is that even a meaningful metric? It is also not clear to me what the control group was, neither how they were selected nor what they did instead of using the ML model.