Thank you, ColinsMum! You hit it on the nail. While I was glad to hear that DS was doing well, "scary" was the predominant feeling.

LOL about Terry Tao. I am somewhat familiar with his story and DS is definitely no Terry Tao.

You are probably right about the variation in the way that professional mathematician think. I am somwhat bias because I am visual-spatial but DS is not although I think that he has improved over time.