>>47646397Poison type characteristically fights by, well, poisoning the opponent and playing the waiting game of letting the poison do its job. (Whether this is reflected in the actual gameplay is of no consequence, I'm talking about general concepts from when the type system was implemented in gen 1's development.) Psychic types can swiftly dispatch poison types by taking them out from a distance with their powers, before they have a chance to do their thing. As a justification it requires jumping through more hoops than traditional magic mumbo jumbo elemental weakness wheels, but that's how it is sometimes.
