MEMO FROM TO: TX J. LEDERBERG John Lotter RC GENETICS DEPARTMENT RO STANFORD UNIVERSITY AEC STANFORD, CALIFORNIA Are you particularly unhappy about this analysis? I would of course add that the bill for each rad is not presented for payment immediately, but is stretched out over EHME posterity, perhaps peaking at about 19% generations. But we can't apply a con- ventional discount rate analysis, except insofar as we develop the compensatory research meanwhile to forfend the costs. If $590 per rad doesn't suit you, what number would you use? SAN -230 222 4454 (2/70