Apologies for the follow-up, no spam intended. For this AMA he self-identified as "co-chair of the Bill & Melinda Gates Foundation", and I have to admit that a

Apologies for the follow-up, no spam intended. For this AMA he self-identified as "co-chair of the Bill & Melinda Gates Foundation", and I have to admit that as a syst-admin 'some time ago', I made my living with Microsoft products. And now as a 'wiser' (snicker) human being, I appreciate his efforts to improve Humanity via his dedication and actions.