Cultivating remaining flexibly young minded and and open minded is far more accurate than age. Closemindedness and fear exists at each age group.

On the other hand, age might be used as a way to self identify a spot in the site. As children we are raised by age and grade to measure where we are, should be and headed. It's a form of subtle conditioning we do not have a choice in until it begins to wear off in one's 20's or 30's.