Talk:Radiation shielding suit

I think that the low probability of two "leaky seconds" during a suit's lifetime (which I have certainly observed in tests) must be due to the "random" number generation, not simple statistics. Consider: The probability of no leaks at all is (250/256)60 &asymp; 0.24099. The probability of exactly one leak is [60! &divide; (1!)(59!)] &times; (6/256) &times; (250/256)59 &asymp; 0.34703. Therefore, the probability of two or more leaks in 60 seconds is about 1 - 0.24099 - 0.34703 = 0.41198. Not overwhelming, but it would be much too large to disregard if the "dice" were truly balanced. Ryan W 11:56, 2 Oct 2005 (UTC)