i thought of that as well.Went and looked at my mail list programme in Racket, and the mail procedure takes many recipients, but in the form if rest arguments,

i thought of that as well.Went and looked at my mail list programme in Racket, and the mail procedure takes many recipients, but in the form if rest arguments, like: (define (send-mail msg . recipients) ...) passing it a list makes the recipients arg a list with a list of recipients. To actually send to multiple recipients I explicitly have to use the apply procedure that passes all list elements as arguments. as you said, not a staticly typed language. types would have made an eventual error easier to debug though.