Having briefly looked it up now, I agree. For gerontologists, I can imagine a strong social pressure not to break kayfabe about the jewel of the field. If I'm g

Having briefly looked it up now, I agree. For gerontologists, I can imagine a strong social pressure not to break kayfabe about the jewel of the field. If I'm generous and assume the field is as rigourous as medicine or history, I have to compare it to how frequently those fields have been mistaken. I put zero stock into Guinness World Records. I'm not convinced by the evidence in the link because it's hard to make judgements about so long in the past. But that's exactly why suspicion should be the default stance, with such financial incentives to inflate one's age. For me, claiming that people would have spotted the switch or attacking the qualifications of the authors isn't enough.