Senator Obama had been campaigning continuously and was exalted. Anyone can make a mistake, like when John Mccain confused the Shiites and Suenies in Iraq and Joe Liberman had to assist him. Also when John Mccain called a country chezkozevokia when it had not been called that for years (The name was changed). He did not know that. Let's also consider the fact that Mccain does not even know how to use the internet or to even send an E-mail. He can't use a Blackberry cell phone, and was dumbfounded when someone asked him a question on an issue about birth control pills and viagra.
Mistakes happen all the time. I cannot counts the ones I have made. We must remember that human beings are running for office.