Proving and disproving a hypothesis are entirely different standards.

For example I have a coin with heads/tails, I hypothesis if I flip it it always lands on heads and we flip it 1 time (n=1), and sure enough it lands on heads that doesn't prove my hypothesis (its very weak support at best), whereas is we flip the coin 1 time (n=1) and its tails that disproves my hypothesis (or at least is strong support my hypothesis is wrong).