When you have no clue what someone is saying--and you won't have to add any content--give the nod. VIG isn't a car guy. I can barely put wiper fluid in it. The other day I went to get my oil changed. The guy brought over the dipstick? to show me that it was full I guess. I had no idea what I should be looking for. So I just gave him the silent nod. No matter what the topic--this always works.