The Brooklyn Unitarian Church in New York, US of A-Miracle (or so we can pray), held a raffle which gave a prize of picking a sermon topic. The winner asked that the sermon be on Charitable Giving (and was in early May 2016 and is online, which would be a great way to spend ten minutes before reading or after this post.)
Would you save a drowning child is one question raised and explored not only in the talk but in a book referenced which looks at the risks and benefits fo giving.