Sorry, Google doesn't know enough about rob withoff yet.
withoff is among the early participants in the design and programming of the mathematica kernel and remains among the world's experts on
withoff is a senior partner in the tax group at faegre & benson
withoff is a partner in the tax group
withoff is a mathematica guru
withoff is presently a member of the staff of wolfram research
withoff is an extension the the ancient game of nim listed above
(interestingly, both of these Withoffs are cousins of mine, and brothers to each other.)