I think it depends on whether it’s active or passive. Active - e.g. a laser that damages a camera sensor, then yes, your device is actively damaging someone else’s camera - deliberate property damage. Passive - e.g. reflective strips so the exposure is bad, a pattern that is hard to focus on or similar- that’s fine - camera owner is making a decision to expose their gear to the environment. Even if, say, it’s a changing pattern that deceives the autofocus into working constantly (no, I don’t know exactly how that would work, but it’s the best I can think of at short notice) so it wears out faster.

Garbage In, Garbage Out. Not enough info, so can’t provide meaningful response, I guess, in this case. That said - I wouldn’t be happy, done know why they would be.

Because their problems are nothing to do with not having dates

Excellent game - highly recommend

Except, it seems, in Brazil. You learn something new every day

Yes, many. In most cases a trained doctor has a moral, and maybe contractual, responsibility to help some one, not a legal one. There is no law that says ‘you are trained doctor, you have to help fix this broken leg’. Now if you egregiously refuse the various medical licensing authorities might take a dim view and you might loose your license to practice, but that’s not the same as breaking the law

Yes, pasteurisation is generally regarded as a massive breakthrough for a reason

Good article- thanks

I’ve had the same experience - make sure they don’t get hot (or are rated for it)

It’s not difficult to turn off.

There are a lot of bits of my job enjoy, when I retire I shall just putter about and spend some time doing those bits and get paid less money for doing it