> COND is basically unreadable in any Lisp, you'd very rarely see people use it today. In CL you'd have more readable options like IF, WHEN and UNLESS. I would

> COND is basically unreadable in any Lisp, you'd very rarely see people use it today. In CL you'd have more readable options like IF, WHEN and UNLESS. I wouldn't say "very rarely"; COND is still used for multi-way conditionals. Virtually everyone I know would write: (cond ((minusp x) 'negative) ((plusp x) 'positive) (t 'zero)) Rather than: (if (minusp x) 'negative (if (plusp x) 'positive 'zero)) IF, WHEN, and UNLESS are generally preferred where they fit nowadays, but I wouldn't call writing them with COND "basically unreadable", either, ie: (cond (pred then) (t else)) (cond (pred then)) (cond ((not pred) then)) Compared to: (if pred then else) (when pred then) (unless pred then)