when you attack an exact same pokemon with same nature, IV, EV,
why does it do different damage?
For example, when I was playing visualboy on PC, and I saved the game
in middle of the battle(shift+F number), then I attcked
and did almost half of damage to the hp
then I loaded and attacked again, but this time, it damaged bit more than half of hp!
it wasn't critical hit, they were both normal hits.
Why does this happen?