What became of light has slowed theory?

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The discussion centers on Paul Davies' theory regarding the slowing of light, which has not gained substantial traction since its introduction. According to the referenced BBC article, further research is necessary to validate the theory, which has not progressed significantly over the past year. Participants express skepticism about the implications of this theory on established physics, particularly questioning whether Einstein's principles are being challenged or if fundamental constants like electron charge have changed.

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what became of this theory put forward by Paul Davies?


http://news.bbc.co.uk/1/hi/sci/tech/2181455.stm

it says there that more work has to be done to reinforce the theory. that was over a year ago. what happened with it?

has light slowed? was einstein wrong? has electron charge changed?
 
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