Yup - I didn't make it to the end (it was a good read, but I got the point without needing the math) so would never have found that out if it weren't for you po

Yup - I didn't make it to the end (it was a good read, but I got the point without needing the math) so would never have found that out if it weren't for you posting it here. Not really a "First of all" if it's at the bottom.