But these are the last remaining years of choice. In the stainless nurseries of the future, the feds will work their way through all the squalling pinkness tattooing a combination tax number and credit number on one wrist, followed closely by the I.T. and T. team putting the permanent phone number, visaphone doubtless, on the other wrist. Die and your number goes back in the bank. It will be the first provable immortality the world has ever known.