Missing item: How to say no. Sometimes this is necessary because management literally wants the impossible (e.g. to solve the halting problem); other times it'

Missing item: How to say no. Sometimes this is necessary because management literally wants the impossible (e.g. to solve the halting problem); other times it's necessary because management isn't aware of the tradeoffs (e.g. we could release this game next week, but people will probably get annoyed when it crashes once a day; or we could add the feature you're asking for but it would take years of additional engineering time).