you don't know, so you take some chances. In your twenties
and thirties you don't know,and you don't know, and that tends
to freeze you; less risk taking. In your forties you know,
but you don't know you know, so you may still be a little
tentative.But then, as you pass fifty, if you've been paying
attention, you know, and you know you know. Time for
some fun...... Yeah when you are Fifty........haaaaaaaaaaa