I fear it might get into philosophy and as about two years ago I went to a series of Philosophy lectures where the keynote discussion was precisely on the philosophy of naming, I am convinced I could get out my depth very rapidly. So we will leave it beyond telling you a tale. In the early seventies I was told of an experimental computer that had been built where two floating point numbers were reported as equal if they were sufficently close. It turns out to be a nightmare to program beause A=B and B=C did not imply A=C. The moral is that blurring the distinction between equal and very similar gets you onto pretty unstable ground