Spend zero time on what you could have done, and devote all of your time on what you might do. Because in the end, nobody cares; just run your compan… - Ben Horowitz

Good product managers focus the team on revenue and customers. Bad product managers focus the team on how many features competitors are building. Good product managers define good products that can be executed with a strong effort. Bad product managers define good products that can’t be executed or let engineering build whatever they want (that is, solve the hardest problem).

Peacetime CEO has rules like “We’re going to exit all businesses where we’re not number one or two.” Wartime CEO often has no businesses that are number one or two and therefore does not have the luxury of following that rule.

In addition, you have removed all accountability. If schedules slip, who is accountable?