They say experience is a cruel teacher, it gives the exam first then the lesson.
So I was fortunate today to meet with "Doc", and find out how to implement control systems in a much more secure manner than what I did 45 years ago. At this point I am sure that there is a lot more to learn, and hope that I start asking the right questions. Anyway, the time went far too quickly. Thanks John for your time and showing me some important techniques.