In the discrete number system, there are no numbers between 5 and 6, you are correct. However, we aren't talking about the discrete number system. The rule for all real numbers is that if two numbers do not have a number between them, they must be equal.
Unless EvF (or anyone) specifically stated that we were talking about anything other than real numbers, real numbers should be assumed. It's not some amazing "get out" argument to suddenly insist that this doesn't work with discrete numbers, we are well aware of that.
Unless EvF (or anyone) specifically stated that we were talking about anything other than real numbers, real numbers should be assumed. It's not some amazing "get out" argument to suddenly insist that this doesn't work with discrete numbers, we are well aware of that.