put a limit on granularity of finished product criteria. -it has 4 wheels attached, task is done. vs. bikeshedding -what is the tire pressure? is the tread

put a limit on granularity of finished product criteria. -it has 4 wheels attached, task is done. vs. bikeshedding -what is the tire pressure? is the tread thickness even everywhere, is the static torque on wheel bearings uniform.