Example (with made up numbers): 0.1% of people fart right before falling asleep. 0.1% of people will commit murder in the next week. Now change the numbers to

Example (with made up numbers): 0.1% of people fart right before falling asleep. 0.1% of people will commit murder in the next week. Now change the numbers to 20%. In once case it matters a lot, another case it doesn't. Context matters when discussing populations also..