[Natsu]

Nobody is professional enough to screw up 0% of the time. It is not possible to plan for everything, ever.

> The utmost of efforts might also include not doing it at all.

So, I should never drive again lest I have a car accident? I understand that you're saying that the reward for this is zero so they shouldn't take any risks at all. But you're extrapolating the risk from a sample size of one and exaggerating it.

I'm sure you wouldn't blame someone for driving to the movies, even if that caused a car accident. And one could just as easily said that they should've stayed home because the drive was unnecessary and cars are, in fact, dangerous.