Your choice of the future here is arbitrary - we could just as easily say that there are many past and present "you" in the multiverse. This assumes a definition closer to DD/DW's than the author's.
The author seems to assert that his experience of self is incongruous with this definition of your identity. As a historical fact, "you've" always either chosen chocolate or vanilla, not both. The other branches aren't in fact you, any longer.
The author seems to assert that his experience of self is incongruous with this definition of your identity. As a historical fact, "you've" always either chosen chocolate or vanilla, not both. The other branches aren't in fact you, any longer.