I will forget things.
You want me to give a message? You're better off writing them a note yourselves.
Wait, I was suppose to go this thing here with you Wednesday? okay!
Oh oh, wait. Today is Wednesday?
I better grab this thing before I go because I'll need it to do something. Let's grab it and go. (30 minutes later) How in the world do I forget to grab something before I leave when it was literally the last thought I had before I left on my way out the door?