I think people have come to interpret the pre-optimization mantra in different ways, which leads to some confusion. Personally I think it's fine to have optimi

I think people have come to interpret the pre-optimization mantra in different ways, which leads to some confusion. Personally I think it's fine to have optimization goals, particularly around things like performance, cost and security (or even your ability to hire engineers). Maybe you park some of them while you prove another point, but you can (and should) measure and adapt along the way.