As Luke Skywalker, Mark laid out a clear vision of a better future for everyone in any world. That better future would not be easy. There would be great sacrifice. You may even lose a hand.
In the end, good people fighting for a better world will always triumph.
This mentality has persisted across Mark's entire career. Mark has been through ups and downs. Through out it all, Mark has found a way to come back and succeed.
These are critical lessons for anyone working with data. The data may not always be clean. The processes may not always be smooth. Don't despair. Hard work and determination will see you through.