Remembering 12, 3, 22, 10 and 8 does indeed sound way easier than remembering 1000.

No, its because they are loud and make flickering shadows. Which is true if you live under them. That’s why there are regulations on how close to buildings they are allowed.

Besides other really stupid things like they explode bats because of infrasound…

What are the other 7?

It’s not that hard to make it yourself. If you can get some decent cheese.