Wow! If I'm reading this http://lisperati.com/logo.html http://lisperati.com/logo.html right, you're the one who came up with the "made with secret alien techno

Wow! If I'm reading this http://lisperati.com/logo.html http://lisperati.com/logo.html right, you're the one who came up with the "made with secret alien technology" logo. I love that logo. :) BTW, on that logo page, you mention that Scheme is your favorite Lisp dialect. If that's so, then why write your book to be about CL instead of Scheme?