A friend sent this humor segment from Reader's Digest - can't remember it word for word (and it was printing funny so thought it might contain a virus....therefore, I'm relying on MY memory)
Anyhoo, the point was that our trains of thought are interrupted as we go through doors, and therefore, we can blame our forgetfulness on the doors themselves.
OK - but what about the times we forget while going through doorways without doors? Or just crossing a room? Or blinking or chewing?
I don't know about you, but I get the strong feeling the majority of people have NO CLUE how bad our fog is - - or is it just mine?! 
Debbie