Reminds me of a place I used to work, where we would have tours through from time to time. Our boss was, erm, especially challenged when it came to social skills. He brought a tour through once and we briefly stopped what we were doing as our boss described the instruments and what they do. We stood in front of the instruments waiting to be introduced. He *skipped over* each of us and went on "introducing" the equipment! Jeez! Left us just standing there, dumbfounded.
But yes, some people definitely have terrible social skills. I'd give a new person a bit of slack, he/she may simply be nervous.