Attempts at an accurate schedule vs owner insistence on 21 Cal. Day review times. These are not always compatible - what is your opinion. I have argued that average is better, and that just because you have less than 21 days in the schedule doesn't nullify or supersede the spec that gives the owner "up to" 21 days. On a long job no big deal, on a short job - creates un-realistic dates. The submittal issue is a bit BS because re-submittals are scarcely addressed. Should depend on the item. I think an attempt at accuracy goes a long way, schedules are commonly not credible vs reality.