Paradoxes arise when logical reasoning produces conclusions that appear impossible or contradictory. Some of the most famous examples have puzzled thinkers for centuries. The classic liar paradox ...

If cats always land on their feet and buttered toast always lands buttered side down, what would happen if you strapped buttered toast to the back of a cat - buttered side up - and it falls off a ...

We are always solving problems, some of which have instantly obvious solutions and others that do not. In the latter case, the word puzzle comes to mind instead. A problem can be defined therefore as ...