Both

Very useful for photographer so they know where the property security can harass you or not

You should ask you Korean friends 😉

It's statistic, not just the detector. I mean, sure, one can be very lucky and happens to detect a neutrino decay with that small detector but to be consistently getting result? Good luck. Literally.

Yes you can build your own detector in the kitchen but good luck with getting a signal within your lifetime.

You do realize I have a degree in physics, right? I had to endure a semester of nuclear physics class 😂

"Of moderate energy"

Also, don't you carry your one form of ID (passport) with you when you travel to foreign country?

I laugh so hard I can't even tell you! I had an ID card at age of 10? in Hong Kong. It's a compulsory item to carry with you. So this is good for the colony but bad for the British? 🤔

Racism much?

White people are so fucking exhausting.