... but still rely on metrics. Yes, metrics are something easy to compare how things changed, but the system as a whole is more complex than that. There are thi

... but still rely on metrics. Yes, metrics are something easy to compare how things changed, but the system as a whole is more complex than that. There are things that are binary (you get there, you lose), there are things that are multifaceted and is not easy to put an linear number to it. And the Goodhart's Law (https://en.wikipedia.org/wiki/Goodhart%27s_law https://en.wikipedia.org/wiki/Goodhart%27s_law) should be taken into account, specially when you lower the number of metrics. They may be a guide, but be careful if you put them as target.