Generation ships. In practice they are outside our capabilities at the moment, but it’s mostly existing engineering … if you could scale up to that, and keep it functional long enough, and keep people healthy long enough, and plan for all eventualities
We could know about it in only 26,000 years due to the speed of light and gravity waves. However I’m not sure how it would affect us at all …
Perhaps there’s a burst of particles going less than the speed of light. We would know about it before those particles got here.
Perhaps you mean the disappearance of the strong gravity well at the center might affect us: I imagine any changes to the structure of the galaxy or it’s movement would take much much much longer to affect us
I don’t see how school is the same scenario at all. In school, you have a natural break every 45 minutes or so, and can choose to do your business then, rather than disrupt class for everyone. Also, kids do need to learn some control, to pick appropriate times when you can. Most importantly, too many kids abuse the freedom to disrupt or skip class: they have no reason to care about a reprimand whereas an adult probably has their income on the line.
Of course, after saying that, I do have to add that my ex is a teacher who does not want kids to ask. She controls the potential for abuse with a token (beanie baby) allowing only two to go at once, and she has the privilege of a private school with higher standards for their kids
That seems similar to what I did: a couple 1x6 x40 (about 3/4”) I had laying around, spanning three studs, attached with 3” lag bolts. I painted them white, similar to the taupe in the room. Then I could attach the TV mount centered, and solid (verified by hanging from it, and I’m a big guy).
It is a bit off-center so my old 55” TV meant I could see it from the side on entering the room. I could have made them smaller/shorter to fix that, however it’s cmpletely invisible with my current 65” TV