Hola gang...
Thomas Edison, probably one of the worlds greatest OPTIMIST...think about this, when he was figuring out the right material for the light bulb filiment he tried everything, to most they would have seen these trials as "failures", Edison had a different view. He quipped..."I have not FAILED 10,000 times, I have DISCOVERED 10,000 ways that will NOT WORK." Not bad if you ask me.
Tony