I guess because otherwise he'd get a million e-mails, "Why didn't you put the clutch in??"
I've given up on craigslisting things, because I was trying to sell my Hi-8 video camera that I used for projects in high school, and not only did I put the exact make and model number so people could look up the specs, I put in the description something like:
"This camera uses Hi-8, which is different from VHS, and is definitely not DVD, or HD, or digital, or anything like that. In fact, if you don't already know what Hi-8 is, then these are not the droids you seek."
You wouldn't believe how many questions I got:
"DOES IT USE DVDS???"
"HI I'M INTERESTED IN YOUR VHS CAMERA..."
"DOES IT USE THE BIG VHS OR THE LITTLE ONES?"
etc.