So, I know there is a provided Pokemon Pokédex and learnset that gives out the stats, weakness of Pokemon and other things. But I don’t know what the weakness mean. Like for darkrai, it has 0 for psychic, nothing for ice, 2 for bug, 1/2 for dark and darkrai has other weaknesses with nothing, 1/2 and 2. I just want to know what nothing, 0, 1/2 and 2 means in the weakness chart. Thank you!