There are only 10 sorts of
people: those who understand binary and
those who don't.
A biologist, a physicist and a mathematician went to investigate a
mysterious house. They looked around and no-one was inside, so
went outside and kept a watch on it. After a few minutes two
went in. A few minutes more and, strangely, three people
The biologist said 'They must have bred in there.'
'I think', said the physicist, 'that it must be an artefact of our
measuring system, we must have miscounted.'
'What we need', said the mathematician, 'is for one person to go into
the house and then it will be empty again.'