You're absolutely right, thanks for correcting my mistake. I think my brain lazily threw them in there because I learned about them all around the same time. Al

You're absolutely right, thanks for correcting my mistake. I think my brain lazily threw them in there because I learned about them all around the same time. Also, I came across this fascinating directory of links a while back, some of which explore the overlap further: http://nsl.com http://nsl.com