John McCain -- the war hero who was held in captivity in Vietnam for six years, who served in the House for four years and is serving his fourth Senate term, who somehow won the Republican presidential primary this year by knocking out two former governors, and who has a website -- does not know how to use a computer.

He has admitted this blunder willingly. McCain, 71, would be the oldest president ever if elected in November (he'll be 72 then). He is old enough to be Barack Obama's dad, and possibly Dwight Eisenhower's running mate.

But how old is the computer? The answer: actually younger than the Arizonan. Computers were invented in the 1940s. McCain was born in 1936.

There's a very good chance that McCain is not reading this blog. Not because it's relatively new or run by college kids, but because he doesn't know what Internet Explorer is.

And that really makes me wonder how former HP CEO Carly Fiorina is actually being considered as his running mate. That's like George W. Bush running on a ticket with someone who knows what global warming is.

So if McCain doesn't know how to use one of those fandangled new future boxes, here are some things the senior senator from Arizona also can't do:

Enter Google searches for "Sunni" and "Shiite."

Read the president's proposed budget (released online only this year).

Update his own website.

Check his AARP status.

I'm sure there are more tasks that you can think of. Feel free to post them below.