>>55249193But that's not the paradox at play with the Paradox Pokemon. The paradox is that they were introduced to the timeline our game takes place in through a nonlinear fashion with no discernable origin point because each of those periods where they appear are equally viable points of origin from a nonlinear perspective of the timeline.
They could've first appeared due to the Professor and then get grandfathered back into Heath's era, or they could've first appeared during Heath's expedition because of the magic jackoff crystals triggering for reasons unknown. Or they could have first appeared for ANOTHER reason altogether we're not yet aware of, and then THAT'S what led to their eventual appearance in Heath's expedition, which would later go on to inspire the Professor to create the time machine so they could appear once more by being deliberately summoned via said time machine.