age = int(input("How old are you?")) if age >= 70: print("You are aged to perfection!") else: print("You are a spring chicken!") This program uses selection to ...

Studia Logica: An International Journal for Symbolic Logic, Vol. 49, No. 2 (1990), pp. 197-214 (18 pages) We illustrate, with three examples, the interaction between boolean and modal connectives by ...

Scientists have developed lots of techniques for targeted drug delivery—directly to tumors, for example—to optimize therapeutic efficacy while minimizing side effects. But a new system may be the most ...