Just force of habit. Being around such forceful magnets is not a daily occurrence so you don't really think about this sort of thing (for both the wife and husb

Just force of habit. Being around such forceful magnets is not a daily occurrence so you don't really think about this sort of thing (for both the wife and husband). I can totally see how something like this happens. I once bought a can of coke and put it in my backpack, then I forgot about it. At the airport a few hours later I went through security and didn't think about it at all. No idea why my bag was selected for a manual check. Until he pulled out the soda can. Big (but harmless) do'h moment. People's brains and memories are just wonky like that sometimes; most people have a few "I'm an idiot" anecdotes like that. Even with training by the way: which is why checklists exists for safety critical stuff. "They have been warned about MRI dangers" is pretty meaningless. The failure is 100% on the facility for not properly controlling access to the MRI room, and people can just walk in apparently(?) And no, a sign or some briefing doesn't cut it. This is also a risk for absent-minded staff by the way: I don't think I'm the only person who has walked in the wrong room by accident. Or just a small confusion about whether the MRI is operational. Things like that.