Maybe it’s cynical but I feel like halfassing your work is a very good tactic in some situations. Eg your manager halfassed the project idea, he halfasses spending the time to understand what’s going on, he halfasses setting the team up correctly, etc. In that situation I’m going to halfass the project and spend the other half going out to eat with my friends at other companies, learning something new and relevant, and planning my finances so I can weather any sort of lay-off etc