Dear Andrea,

I am so glad you have an interest in the power of mathematics. I am not a mathematician myself but have used it freuently in what I have worked in. As I am retired it is not on my personal radar to use a spreadsheet to calculate the date I retire. I was interested in your commentary on analysts and journalists who have largely , if not, totally ignored POET, though Joel is rumoured to be in this group. This will change because such gains as we have seen will force them to look again. I, for one, would love to know their views and, I suspect, this day is not far off.

David