Best physical feature: My genes will make me look young for VERY long.
Worst physical feature: Cancer runs through my family.

Best mental feature: I know what I want, and how to acheive it.
Worst mental feature: I'm often oblivious to other people's feelings.

"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram