12:42:53 PM Jun 12th 2012
A note from personal experience. It's possible to use the same blade in a manual razor for about six to nine months, shaving every other day, without cutting yourself - if you don't mind looking as if you haven't shaved for a day or so at all times. If you do this, you get so used to swiping a dull blade over your face that it's uncomfortable to adjust to a sharp one the few times you really need a clean shave (for, say, job interviews) and have to break out a new blade.
04:37:21 PM Sep 29th 2010
Some of those examples, like the Lost ones, bring to mind a surely related trope.. Picard-is-stuck-on-an-alien-planet-for-days-and-stays-smooth...