Unusual

Can you spot it? Read the following paragraph to find out...


"This is an unusual paragraph. I'm curious as to just how quickly you can find out what is so unusual about it. It looks so ordinary and plain that you would think nothing was wrong with it. In fact nothing is wrong with it. It is highly unusual though, study it and think about it but you still may not find anything odd. But if you work at it a bit you might find out. Try to do so without any coaching."

So the question is, what is unique about the paragraph?