Hi John, As it is your view, you are entitled to it so long as it has no effect on other people who have different views. But my question was about psychological causality. You clearly have no idea about this. 'Understanding' is a mental process that stands for something about which even professional psychologists have only limited ideas. The same applies to 'meaning'. As far as I am aware there is no clear evidence anywhere linking variety, choice, meaning and understanding. I was hoping you might have some new, research data based insights. But clearly all you have is mere assertion. Brian.