>Even the theory's advocate acknowledges in this interview that it's untestable. There is no way to observe that the world would behave differently whether or n

>Even the theory's advocate acknowledges in this interview that it's untestable. There is no way to observe that the world would behave differently whether or not the theory is true. Mathematics is also "untestable" in the same way. You can't observe that the world would behave differently whether or not 2=2 or 1=2. Does this make mathematics practically useless, except as a form of entertainment? Furthermore, why is entertainment spoken of as a lower purpose than "practical uses"? I very much doubt you'd want to live in a world without such "entertainment".