Some of you know that I write the Question and Answer Column for Our Sunday Visitor Newsweekly. I like doing that as it imposes a kind of disciplined writing on me, where I must answer questions very briefly, in about 400 words or less.A question recently came in about a topic that I have not written much about here on the Blog. I’d like to reproduce the question and answer here in order to include the concept in my blog compendium and also to encourage you, if you do not read my column in the Sunday Visitor to know about...