If that were his definition -- that identical things are things which share every property, including location in spacetime -- then it would be begging the ques

If that were his definition -- that identical things are things which share every property, including location in spacetime -- then it would be begging the question. In any case, that is not what he meant: https://news.ycombinator.com/item?id=13851486 https://news.ycombinator.com/item?id=13851486