It would be extremely difficult to prove, since an exact physical copy of anything is impossible to make. I think it's very likely, though. I don't exhibit a c

It would be extremely difficult to prove, since an exact physical copy of anything is impossible to make. I think it's very likely, though. I don't exhibit a constant physical state; it's always changing. This establishes a range (albeit, a very narrow one) of possible physical states that can harbor my consciousness; there can't be just one. A clone of me would also have a fluctuating state. Although it's extremely unlikely that we would ever share the same state at the same time, it's plausible that his state would fluctuate into my range; there's no way of establishing how likely this is, because these concepts are imprecisely defined, but it's clearly not implausible. Philosophically, I find it unlikely that his fluctuations into my state-range would cause a merging of my consciousness with his. Any assertion of the opposite would suggest telepathy (of an involuntary sort).