I compare the theory of intelligent design to string theory to see on what basis, if any, only the former can be justifiably
excluded as being scientific.We shall see that the classic criterion of testability or falsifiability is sometimes not so
straightforward, and that there are other criteria to help us make such a distinction.
Keywords. intelligent design - irreducible complexity - evolution - string theory - anthropic principle - theoretical testability - falsifiability - Michael Behe - Leonard Susskind