I worked night shift in a metal fabrication shop about 11 years ago.
Two bastions of humanity figured out that they could light an oxyfuel torch and adjust it to a neutral flame, snuff the flame out of a glove or something, and then use the torch to fill a plastic sandwich bag with a perfect mixture of oxygen and acetylene. They would then place this bag somewhere and light it on fire, which made a lot of noise. They had great fun until they tried it with a small office-sized trash bag. The word of the day is brisance. It made a tremendous bang which cracked some glass in the shop, but of course our two heroes were caught in the blast amd burned, because a sandwich bag made a loud pop, but a trash bag was more of a bomb. They lit the trash bag like they did the little bags, by holding a lighter to the plastic.
This is weirdly specific, but I’ve sadly been in more than one internet “discussion” where a CNC laser cutter is shown in a video, and some knob end pops up in the comments and says “ThAt’S a PlAsMa CuTtEr NoT a LaSer sToOpId”.
For about ten years I set up, operated, programmed, maintained, and repaired both plate and tube lasers made by NTC, Mitsubishi, Amada, Trumpf, Han Kwang, Mazak, and BLM. I know enough about industrial lasers to make them boring. I can tell if a shop has a laser just by driving by. A plasma cutter works different, sounds different, and cuts different than a laser, and even someone who knows nothing about either process can see there is a difference.
Fun fact, this is part of the reason so many cars are silver, white, or black now. A lot of base models of cars are only available in those three colors, along with maybe red. To get a different color, you have to get an upgraded package… and there’s your $1k price jump.
Don’t forget that many small propeller driven aircraft run on leaded gas, and it’s a formulation of leaded gas that has 10x the lead that motor fuel used to.