You might have heard that this week Mark Zuckerberg and Priscilla Chan announced that they’re going to give away 99% of their Facebook stock in hopes of mak­ing the world a much bet­ter place for their new­born daugh­ter and her gen­er­a­tion. Now, I just want to be right up front with you. I have no inside infor­ma­tion about this fas­ci­nat­ing devel­op­ment. But what I do have is inside infor­ma­tion, the inside sto­ry, on a gift that this cou­ple made five years ago in their first act as phil­an­thropists.