Ok.
So, he lived for 17 years, died, reincarnated 5000 years later, and got to age of 17.

How old is he?

Grok said 17.
ChatGPT and gemini say 34

@LukeAlmighty Gemini gives:
Chronological Age: 5,034 years.
Experience Age (Mental Age): 34 years.
Biological Age: 17 years.
The "Grandpa" Verdict: If he’s at a party, he’s 17. If he’s giving life advice, he’s 34. If he’s talking about "how things used to be back in my day," he’s a 5,034-year-old fossil.

@zatrsakr
Don't you think there's a reason why I asked for a single number?