I've seen this letter circulating some astrophys blogs recently. Maybe some of you have seen it as well. http://jjcharfman.tumblr.com/post/33151387354/a-motivational-correspondance Essentially, a R1 astrophys department tells its grad students that working less than 60 hours per week is inexcusable, and most should do 80-100. For those of you who have gone through astrophys grad schooling, is this true? was that the norm? And, more importantly, were you happy for the chance to do it?