If a speculator is correct half of the time, he is hitting a good average. Even being right 3 or 4 times out of 10 should yield a person a fortune if he has the sense to cut his losses quickly on the ventures where he is wrong.
Only as you do know yourself can your brain serve you as a sharp and efficient tool. Know your own failings, passions, and prejudices so you can separate them from what you see.
Vote for the man who promises least; he'll be the least disappointing.
Age is only a number, a cipher for the records. A man can't retire his experience. He must use it. Experience achieves more with less energy and time.