Hospitals work extra long shifts because every time there is a shift change there is, statistically speaking, a chance for errors. Those errors in hand-offs kill people, and they found that 12 hour shifts and fewer hand-offs save peoples lives.

The rest of the hospital just kinda follows that mantra. And that makes sense -- everyone works that way in the hospital and no one dies.

That ain't how software dev works, and no one is going to die or go into insulin shock because Twitter didn't push a UI update to Prod on schedule.