21.   But, Lipton said, if the random numbers used to encode were used once and never stored, the agency would be hamstrung.

22.   Easy enough for you, no doubt, but generating random numbers can be a difficult task for a computer.

23.   First, generating a truly random number is harder than it sounds.

24.   He spent a couple of days using a debugging program to examine the portion of the Netscape software that creates random numbers.

25.   However, Netscape has drawn criticism for the method by which its software generates random numbers.

26.   However, Massachusetts allows drivers to have a random number assigned if they do not want to use their Social Security number.

27.   Netscape officials said Monday that they would strengthen the system, by making it significantly harder to determine the random number at the heart of their coding system.

28.   Normal voice calls are placed at random times to random numbers, and the average length of those calls is three minutes or less, the inventors say.

29.   Perhaps there is a finite combination of random numbers and words that can fit into one head and tumble gently around without clogging up the works.

30.   That is because the code uses a stream of random numbers that are plugged into the key for encoding and decoding.