I mean, that happens. Bomb makers die when they screw up. The guys that make fireworks sometimes do, and they work under very strict guidelines.
But, even with the kind of home brew, low speed stuff that you can do in your garage, it’s still very dangerous. Shit, you fuck up making some stuff, and even if it doesn’t explode, you can end up in the hospital.
Even dumb shit like dry ice bombs can mess you up bad.
And it isn’t like experience is a guarantee of safety because experience can lead to complacency. And that’s when people really fuck up.
The kind of people that are making bombs as insurgents though, they tend to have a “recipe” of sorts, a way of building their preferred device. That methodology tends to be highly reproducible. They’ll have their supplies, and tools all set up to minimize fuckery. The same thing, built the same way every time, you tend to have less chance of making simple mistakes.
It’s hard to describe how to maximize safety without describing how to build a device, and fuck that noise. But the key is to be precise, and follow the same steps every time.
Now, the pros, like the dudes doing demolition, or mining, they’re usually dealing with stable supplies. They don’t really make bombs in the way I think you mean, though it’s effectively the same methodology to prevent error. You have a plan, you stick to it, and you don’t deviate from safety standards.
If you go digging through old newspapers and such, there’s all kinds of idiots getting hurt trying to blow shit up in their back yard (sometimes literally in their back yard, not even somewhere away from other people). We had an idiot that tried to mix up some gunpowder and metal shavings to make his own fireworks this summer. Took off his hand, and last I heard was still needing surgeries from where he fucked up his face. No idea what he was doing exactly, but it’s an example of idiots idioting and bad things ensuing.
But it does influence people, if only subconsciously.
The point of it isn’t to say “look at this weak old man, he could never have committed these acts”.
It’s to hopefully sway a jury into thinking that they’re so old they’re not a threat, and maybe create a deadlock. Then, if that fails, then to hopefully garner a lighter sentence, for much the same reason, that they’re no longer a threat.
It is bullshit, neither of the two you used as examples had any mobility issues before arrest, and any that they might have developed afterwards wood not be as severe as they made it look. Mind you, the stress, the physical demands of processing, the extra travel and such could cause someone to have extra problems. My crippled ass could barely walk to the car on my cane after the last time I got called for jury duty. There’s a lot of walking around on concrete floors and sitting in horrible seats at courthouses. It’ll fuck your back up.
But you aren’t going from walking without a cane to needing a walker in the amount of time that passed. Not without a damn big reason.
But think about it, when you see some old dude hobbling along, is your first thought really going to be “I bet they’re faking it”? Even if you know they are faking it, that image of a weak person plays on prejudices of thought that damn near everyone has. Look at the idiots that scream about “boomers” this and “boomers” that, like everyone over a certain age is flawed. We all have prejudices of thought, assumptions, and it’s damn near impossible to completely control them and ignore what our eyes see.
You might achieve that when it’s fresh in your mind, but the next time you go to the store and see some old lady on a cane, are you really going to be thinking about how she could be doing yoga and pulled a muscle; or are you going to be thinking about how that poor old lady is in rough shape because she’s old, and that’s all you can see until/unless you stop and think about it? Most people, they never see an old person as a threat.
Man, I barely have any gray in my beard, and I’m a fucking sasquatch. I’ve still got arms bigger than some people’s thighs, and just by me using a cane (and I need one, if I want to not fall when my leg gives out), people react very different than when I’m leaned up against a wall with my cane strapped across my back. On cane, they just look away as fast as they can. With it not in use, I get suspicious looks, and adults hurrying away, and the occasional security person asking why I’m just standing against the wall.
I’ve seen it hundreds of times when I’m out with people from my disability support group. You let my buddy Spider get out of his scooter, and him being a small guy with a twisted spine on a cane is still not going to have people walking around him the way they do with the scooter. They’ll give him more room, but not the same. The guys and gals that have less visible disabilities have their own issues with people treating them different when they’re using a mobility aid compared to when they aren’t.
It’s a thing. We all build up these links in our heads, associations with things we’ve experienced that we use to evaluate new things. Ignoring those etched in patterns is hard, even when you’re aware of it.
It’s not going to work perfectly, or every time, but it does happen