Parallel Universes

While in our everyday lives light appears to travel in a straight line, on closer inspection - shining a touch through a narrow slit, for instance - it is clear that light does in fact bend. This fact has led quantum physicists like David Deutsch of Oxford University to propose that this may point to the existence of parallel universes. Deutsch clams that light particals (photons) are being deflected by each other, invisible, particles which behave exactly like their visible counterparts. This extends quantum theory - which predicts that for each neutron and electron there are corresponding shadow particles - to light. This world of shadow particals could be called a parallel universe which has some effect on the tangible universe. For Deutsch, physical reality is a place where many universes exist at the same time - meaning there could be numerous versions of 'you' currently wondering around the multiverse...

A good film to watch that backs the above theory is "The One" staring Jet Li...
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