<hr>Couple engineers are sitting around finishing up their compressor design ...
<i>Eng1: Well, that's about it. Looks like the pump, lines and tank will take 500 PSI.
Eng2: Hmmm, just to F' with people lets put a 100 PSI cutoff in.
Eng1: Great idea! And the marketing people will think it is really cool that the maximum pressure is limited to just 100 PSI, what a great selling point! And heck, who cares that the cost to actually build the compressor is based on the 500 PSI limit. The bean counters won't care!
Eng2: Heh, but some smart kid will figure out that by just removing the safety limit he can get the full 500 PSI out of our compressor.
Eng1: Nah, you would have to be unusually brilliant to come up with an idea like that.</i><hr>