In a message dated 96-04-16 15:51:46 EDT, Perry Metzger writes:

There is no reason you can't have a string of 20 1 bits in a row in a perfectly random sequence, for example. Usually, random sequences are non-compressable, but it is possible (though very improbable) for Hamlet to appear out of a random number generator, and it is of course quite compressable...

Of course, if that happened, the odds of it happening from a Trojan Horse or other type of attack are overwhelming...