The Bleeding Obvious

I often marvel at people's ability to ask incredibly obvious questions, however, 'pool guy' takes the cake...let me explain:

Last week, it was hot-hot-hot where I live, so the perfect after work solution? Go for a swim at my neighborhood pool.

And while I was in the pool - swimming (and just to be clear, I was actually swimming, not just jumping around or splashing about, actual breast stroke swimming) - a man swims up beside me and at the side of the pool says:

"Do you know how to swim?"

Hmmm... well, I am in the pool, s-w-i-m-m-i-n-g, which I thought he might have noticed since he was also, in - the - pool, and had to swim up to me to ask the question...

So wouldn't the answer to his question be readily apparent?!?
:/

Apparently, not.