Earlier quoted context omitted.
I never had impossible deadlines. I don't think anyone else around me did either.
Presumably he meant "impossible in a 40 hour work week," so that if you're killing yourself with an 80 hour week to meet deadlines, you're not a counterexample. Of course, there's a prevalent opinion around here that working over 40 hours a week always decreases your productivity (and not just per hour), and the people who buy into that will likely find this definition of impossible to be silly (since as a corollary,…
I personally would argue that an 80 hour week isn't the same as two 40 hour weeks. It would probably be more like a 40 hour week and a 20 hour week. The end result? You get something done sooner, but you end up putting in a lot more time than you would if you just worked 40 hours a week. It's more efficient for the company because they're getting a product faster and only paying for 40 hours worth of work a week. But it's less efficient for the employee because they're putting in many more hours in total to do the same task but only getting paid as if they were working 40 hours a week.
In my experience, working long hours is only good in the short-term. Sometimes that is necessary. But it is almost never a good idea in the long-term.