.. always pleased to hear what I say makes sense

Of course you make sense. I wouldn't be talking to you otherwise : ). Meanwhile, to myself it provides me with a sounding board to counter your arguments and develop something I have only vague notions of, since it is not something that is available as a take-away from the dialogue/s available on the web. It's an ongoing Q&A, so to speak. These are complicated issues and it takes time .. the time being my enemy, as it happens.