Any time you feel dumb, don't worry. Check out the following excerpts from a "Wall Street Journal" article by Jim Carlton. Lots of people are dumber than you.
I'm writing you this letter to tell you that I'm leaving you forever. I've been a good man to you for 7 years & I have nothing to show for it. These last 2 weeks have been hell.
Having just moved into his new office, a pompous, new colonel was sitting at his desk when an airman knocked on the door.
A plain computer illiterate guy rings tech support to report that his Computer is faulty.