I don't take my desk-hours too seriously because I know that while I'm out running errands, exercising, taking a shower, sleeping, etc. I continue to chew on pr

I don't take my desk-hours too seriously because I know that while I'm out running errands, exercising, taking a shower, sleeping, etc. I continue to chew on problems, and sometimes taking the slow path to a solution produces a much more mature one. That's a perfectly reasonable point of view, but in office environments it can quickly run up against crab-mentality people who make awkward comments about anyone whose hours don't match or exceed their own. And at least in the software industry, current trends (stand ups, pair programming, etc.) are pushing away from flexible hours and focus on results.