Yesterday Elon Musk offered to pay $54.20 for each of the shares of Twitter he doesn't already own (he owns 9.2 percent of the company). If shareholders take him up on his offer, he'll pay $43 billion. Which for the world's richest man is play money, apparently, but for most of the rest of us seems like quite a lot. Today's post is about philanthropy, and how many very wealthy people don't seem to be very good at it.As always, I hope you find it interesting, and thanks for reading! Subscribing is free, so please feel free to forward to anyone you think may also be interested.