if we got all the cats in the world to meow at exactly the same time how loud would it be
Well the average cat meow is like 65/75dB (above speaking volume but below shouting) and there are about 2bn cats in the world, so, by that math, 130-150bn dB. Which is about 100 million jets taking off at once.
the notebook problem: you see a notebook. you want to buy the notebook. but you know you have like TEN OTHER NOTEBOOKS. most which are STILL EMPTY. you don’t need to notebook. you’re probably not gonna use the notebook anyway. what’s the point? DONT BUY THE NOTEBOOK. you buy the notebook.