If the argument is about how the world of people (as distinct from scientific conclusions) works, then life experiences are important information. What sort of argument about the world (say, an argument about why people are poor) should ignore life experience? Admittedly, the experiences of two people aren’t enough, but at least that’s a start. It’s also worth checking on whether one of the people is arguing from no experience.
If the argument is about how the world of people (as distinct from scientific conclusions) works, then life experiences are important information. What sort of argument about the world (say, an argument about why people are poor) should ignore life experience? Admittedly, the experiences of two people aren’t enough, but at least that’s a start. It’s also worth checking on whether one of the people is arguing from no experience.