"The reality is, the old people who you regularly interact with are XYZ. We can't conclude anything about old people in general based on your personal experienc

"The reality is, the old people who you regularly interact with are XYZ. We can't conclude anything about old people in general based on your personal experiences. " True. Hence why I state that there is a bias to begin with. The point of my comment is that other people are possibly engaged the same process but without realizing their bias, and thereby making an unwarranted conclusion about all older folks in general.