True, but the same applies to all similar things, even critical successes that seem to be much more common in RPGs than in real life because they are in the games to keep things interesting and unpredictable.Agamemnon wrote: If firearms had a 1-in-20 chance to blow up on you any time you used them, I suspect they wouldn't have caught on.
I am not saying that the above way to represent reliability (or lack of) is really a good way to handle it but I suppose it is just another game artifact that you might be able to handle differently