The down side of shifting the discussion is that it had just as well been posted in Alpha Centauri. (Only old people will get the reference.)
Some searches may discover it, but there is lots of good information on both paths here, but only the Kirkham/Shelby info will bubble to the top in a year or two. So then we can come back and have a brand new topic about the merits of SPF vs ERA. But that's OK, this forum thrives on lather, rinse, repeat.