If he was a third rate chemists there's no way he would invent PCR, even if it seems obvious after the fact and with current automation. He wasn't just at the r

If he was a third rate chemists there's no way he would invent PCR, even if it seems obvious after the fact and with current automation. He wasn't just at the right place at the right time; unless you want to credit it to aliens that he claims to have met.