I know some experts have poo-poo'ed the theory that Jeanne Calment's daughter impersonated her ( https://en.wikipedia.org/wiki/Jeanne_Calment#Scepticism_rega... ), but I don't find their arguments convincing. I'm not saying it's settled, but I think the evidence strongly points to her not being as old as she says, and I think the "experts" downplay the evidence for the switch theory too strongly, even if it is largely circumstantial:
1. The age gap between Calment and the next oldest person is the strongest evidence. It's very, very hard to ignore this.
2. As outlined in this article, there is a strong economic motive for the swap.
3. I think there is other evidence (e.g. some of the photos) that wouldn't be that strong on their own, but just add to the weight of the other, stronger pieces of evidences that there was a swap.
1. The age gap between Calment and the next oldest person is the strongest evidence. It's very, very hard to ignore this.
2. As outlined in this article, there is a strong economic motive for the swap.
3. I think there is other evidence (e.g. some of the photos) that wouldn't be that strong on their own, but just add to the weight of the other, stronger pieces of evidences that there was a swap.