(by David McRaney)
You are a pile of atoms.
When you eat vanilla pudding, which is also a pile of atoms, you are really just putting those atoms next to your atoms and waiting for some of them trade places.
If things had turned out differently back when your mom had that second glass of wine while your dad told that story about when he sat on a jellyfish while skinny dipping, the same atoms that glommed together to make your bones and your skin, your tongue and your brain could have been been rearranged to make other things. Carbon, oxygen, hydrogen – the whole collection of elements that make up your body right down to the vanadium, molybdenum and arsenic could be popped off of you, collected, and reused to make something else – if such a seemingly impossible technology existed.
Like a cosmic box of Legos, the building blocks of matter can take the shape of every form we know of from mountains to monkeys.
If you think about this long enough, you might stumble into the same odd questions scientists and philosophers ask from time to time. If we had an atom-exchanging machine, and traded one atom at a time from your body with an atom from the body of Edward James Olmos, at what point would you cease to be you and Olmos cease to be Edward James? During that process, would you lose your mind and gain his? At some point would each person’s thoughts and dreams and memories change hands?