I've known plenty of people who are sociable but thoughtless.

I know I myself have been a nuisance without realising it, and I am grateful for each person who have told me when I've been rude or hurtful. It's how I have learned to be more considerate in general, as well as cease the immediate behaviour to protect the relationship.

Not everyone will be accommodating, but you will never know unless you try.

Regsrdless of if the weights are falling or bouncing or being dropped: What about the actual suggestion of communicating with the neighbour? I notice you don't reply to those in the comments.

Rich, yes.

Not "eat the rich"-rich, but enough so that I would expect some charity work and personal responsibility to make the world slightly better, for example improving the workers conditions and benefits.

How do you restart it wrong? And more importantly - what's the correct way to do it?

It's so annoying (and slightly embarrassing, and funny how often it happens), to restart it myself to no avail... then have it work after a second identical restart just because someone else is spectating.