> it's not worth it because it's such a gamble. That's also true. At the individual unit level, small differences in MTTF/MTBF are negligible because product

> it's not worth it because it's such a gamble. That's also true. At the individual unit level, small differences in MTTF/MTBF are negligible because product failures are naturally distributed anyway. The mean time is just a mean, and nobody gives a shit about a good mean product failure rate when theirs happened to fail below the mean. That's true no matter how much you spent.