Bruce Sinclair wrote, on Tue, 01 Dec 2015 23:43:08 +0000:

As I said. Tiny. Not even a factor of 2 (that engineers routinely use), let
alone a factor of 10 (that starts to make things interesting).

Let's agree to disagree.
We're not talking "safety" factors (where a doubling is routine).
We're talking specifications.

If I gave you a 40 amp circuit breaker and it kept switching at
34 amps, you'd not be so cavalier about the huge difference.

Likewise, if I told you something was 34 dollars a month, but it
turned out to be 40 dollars a month simply because I lied, you'd
again not think to be so nonchalant about it.