F-reds:
Rjan:
As I say, I’m curious to understand what you think stupidity means. One minute you’re telling me you’re a smart guy who can figure out basic machinery and who has never been at risk from defective or unfamiliar equipment, next you say you’ve been hurt more than once by your own stupidity.
Simple. Stupidity is hurting yourself through an action, which on reflection is in advisable…
Since serious injury is probably never advisable whilst delivering commercial goods (or any employment besides say the armed forces or similar), your definition then leads us to say that anyone injured delivering commercial goods is stupid. That doesn’t seem to leave room for actions which are stupid notwithstanding the lack of injury so far (sum-uppable as “picking pennies in front of a steamroller”), nor for injuries which result from reasonable conduct on the part of the injured person but stupidity on the part of another (such as the idiot who trips over a floorboard and pushes you into an unguarded drive belt, or the idiot who made it a condition of your employment to stand next to unguarded drive belts and dodgy floorboards).
I never said I was smart. You did. Thanks! 
Yes I have been hurt by my own stupidity. There’s no shame in that. In fact I have just rid myself of bruise under my thumb nail, been there 3 months growing out. The cause? Me assembling four separate IKEA chest of drawers on a Friday night, whilst consuming 8 bottles of Asahi. Towards the end of the flat pack hell my judgement was impaired and I mistook my thumb as a nail…
I did think about suing IKEA, because they didn’t provide me with an instruction to not attempt while consuming alcohol. I also thought about suing Asahi, for not finding space on their label, to warn me not to use hand tools after consumption.
But I declined because in the morning, when my thumb was throbbing, I decided that on reflection my actions were unwise, and it was probably my fault.
I would agree, except that stupidity is normally something that does imply a degree of shame in the workplace (unless you’re a slapstick comedian working to a slide-whistle soundtrack, and even they have cushions under their clothes), and secondly your example fails to establish any stupidity on the part of Ikea. They presumably didn’t provide the tools. Nor did they require you to assemble the furniture, or require you to be drunk, and certainly not do both at the same time. They didn’t have the opportunity to observe you being drunk when you commenced. And the resulting injury was quite modest - it’s not so serious that we can’t afford to let people suffer it.
So my point is simple. He had used other tail lifts before this one, and as such probably should have been looking at his foot while he was clearly putting it in mortal danger. Then he shouldn’t of tried to blame anyone else for his idiocy. As ever I agree with Maoster…
The question is had he used that tail lift before, and had he been seen to do it safely? And did he have the right attitude for self-preservation - if not, then he should be employed in the Wacky Warehouse (or by employers who have safer tail lifts), not around machinery which requires responsible operation. Also, he didn’t just try to blame his employer, but succeeded in doing so.
It was the lack of training that was really fatal to the employer’s case. It doesn’t take much time to put a guy in front of a tail lift and watch him work and give him a few pointers. Moreover, if you’re having to say to him “don’t put your feet there or they’ll be broken before you can let go of the button”, that normally prompts an employer to think about whether their machine should incorporate a sudden foot-breaking feature in the first place (not all designs of tail lifts do).
The only way it can take too long or too much hassle to do this, is when there are too many hidden hazards which aren’t easy to demonstrate, in which case the employer needs to start thinking about proper training or hazard mitigation. Or use newer equipment and maintain it properly, because usually it is older designs or maintenance defects which are the real problem.