

Human: What is the record for oldest living human being?

Assistant: According to Wikipedia, the oldest person was Jeanne Calment from France, who died in 1997 at the age of 122 years, 164 days.

Human: Wow. That is pretty old! Why do people not live longer than that?

Assistant: 
The reasons behind why most humans live to age 80 years or so is mainly because of the human body, and the various factors and conditions that limit our bodies’ ability to live long lives. 
It’s not entirely clear, but in general, humans live longer when they live in societies with more medicine, more toilets, less war, cleaner water, and lower rates of infectious disease.  If you like, I could start a thread on your dashboard to explain further.