SEE---this man was soooo uninterested in the hard work of being POTUS, he would give speeches but not even know what he was saying...otherwise he would REMEMBER the things you just pointed out...
But we all know that his brains were in his pants...and the only thing he loved more than applause and adoration was, well...you know!
Bill Clinton used the office of the presidency to pick up chicks. Anything else was a distraction.
ROFL!! Unfortunately, we all remember all too well what Clinton was really interested in.
He just talks to hear the sound of his own voice, and, as you pointed out, contradicts himself pretty frequently and doesn't remember his own words from previous rambling exercises.