Maya,
twin teenage boys on the loose with a refractometer--there's an image. Now, if they were identical... :-)
I too wish I'd been able to see my son through those years knowing more about these principles. I only knew enough to make it complex--seeking after supplements! Well, there is *always* the present. I look around today and see it is all about this choice of 'outcome versus merit'. Very full and rich, this moon.