Aren't they usually bright yellow already?
Not always. Some are primarily black - and they can superficially look like a handgun.
If I didn't take my foot off that accelerator for ten seconds, do you think I could use that excuse?
That's not a good analogy, because she only pulled the trigger at the end of that ten seconds.
So imagine you are driving and have a sense something is wrong. You enter a state of alertness for ten seconds prepared to hit the brake, but your concentration is heavily focused on the road and situation that you may have to respond to, so if you have perhaps put your foot in the wrong place at the start of those ten seconds or forgotten to move it, thinking it is over the brake when not, you may be
less likely to notice in that period because of where your attention is fixed.
It should be very easy for each and every one of us to think of an incident where we ended up thinking "How the hell did I do that?" Who's flipped their spectacles up onto their forehead and a short while later spent three minutes looking for their spectacles, or seen someone else do it? It might seem trivial, but it's the same sort of thing.
I've always found this, and other similar reasonings, to be completely inadequate.
"We're only human" is acceptable when it comes to little mistakes, like missing appointments, or forgetting to season your meal, but when it comes to mistakes that literally cause serious injuries or deaths, I find it to be wholly unsatisfactory.
When your job can potentially kill someone, I hold you to a higher standard. If they can't handle the stress, then they need to find another job.
Maybe that is unreasonable, but I just don't want to die by the hands of someone who should know better.
Sure. They're still at fault, they get fired, prosecuted for manslaughter, and live with the guilt. No-one questioning that.
We can and should demand systems to minimise risk: training, processes and so on. But everyone on this planet just to accept that even with risk minimising, every once in a while someone's going to have a bad few seconds and completely fuck up in potentially devastating ways. It doesn't mean they are an irredeemably bad person.