Exclusively!

I've always thought that it was about 1000% faster and easier once you got used to it. I can't use a "normal" calculator now.

I've started going through Structure and Interpretation of Computer Programs (the famous "wizard book") and it is my first experience with Lisp (actually, the scheme variant of lisp).

As many of you probably know, scheme uses "prefix notation", so instead of RPN's "5 enter 5 +", you have (+ 5 5). It took some getting used to, but I like it a lot! it works with an indefinite number of arguments, which is very cool.

Jim