"One such interpretation as to how subatomic particles can do more than one thing at once is for there to be more than one universe...
"The basic idea is as follows: whenever a quantum particle is faced with a choice of alternatives (as happens everywhere all the time), it doesn't choose one but rather all. It is only when we look that we force the little blighter to make up its mind...
"But in the many-worlds version the particle never makes up its mind.
"Instead, it, and the universe along with it, splits into multiple versions of itself equal to the number of options available.
"When we look at the particle, the universes separate into non-interacting independent realities.
"We see one version, but our identical counterparts see another."
"Oxford physicist David Deutsch... proposed a variation on Everett's idea in which all possible universes already exist within a quantum multiverse.
"What we perceive as our reality is just a weaving through this vast shadowy multiple reality, creating our own version of events."
In a parallel universe, this theory would make sense