The presidential gaffe that struck me when I heard it was Barack Obama's reference to a military corps as a military "corpse." He is obviously a man who is used to sounding off about things he has paid little or no attention to in the past. His mispronunciation of a common military term was especially revealing to someone who was once in the Marine Corps, not Marine "corpse."
Like other truly talented phonies, Barack Obama concentrates his skills on the effect of his words on other people -- most of whom do not have the time to become knowledgeable about the things he is talking about. Whether what he says bears any relationship to the facts is politically irrelevant.
A talented con man, or a slick politician, does not waste his time trying to convince knowledgeable skeptics. His job is to keep the true believers believing. He is not going to convince the others anyway.
Back during Barack Obama's first year in office, he kept repeating, with great apparent earnestness, that there were "shovel-ready" projects that would quickly provide many much-needed jobs, if only his spending plans were approved by Congress.
He seemed very convincing -- if you didn't know how long it can take for any construction project to get started, after going through a bureaucratic maze of environmental impact studies, zoning commission rulings and other procedures that can delay even the smallest and simplest project for years.
Only about a year or so after his big spending programs were approved by Congress, Barack Obama himself laughed at how slowly everything was going on his supposedly "shovel-ready" projects.
One wonders how he will laugh when all his golden promises about ObamaCare turn out to be false and a medical disaster. Or when his foreign policy fiascoes in the Middle East are climaxed by a nuclear Iran.