Thursday, March 22, 2007

Retrocausality

Have been thinking about this for a few days now. I am particularly fond of new ideas that appear to confirm my intuitive prejudices!

The behaviour of entangled photons has long seemed to present some difficulties for Einsteinian relativity. But this alternative, retrocausal explanation would suggest that the spooky action occurs across temporal rather than spatial distances.

I found especially intriguing the idea voiced by Australian researcher Paul Davies: that there might be a literally loopy explanation for the way that the structural set-up of universe appears to be optimised for the existence of conscious life.

"The universe might actually be able to fine-tune itself. If you assume the laws of physics do not reside outside the physical universe, but rather are part of it, they can only be as precise as can be calculated from the total information content of the universe. The universe's information content is limited by its size, so just after the Big Bang, while the universe was still infinitesimally small, there may have been wiggle room, or imprecision, in the laws of nature. And room for retrocausality. If it exists, the presence of conscious observers later in history could exert an influence on those first moments, shaping the laws of physics to be favorable for life."

This is clearly more satisfactory than the more familiar 'there must be an infinite number of less fine-tuned universes out there too' explanation.

Anyway, I'm far more comfortable thinking of 'God' as the end product of our cosmos than as some sort of sentient creator person outside of it, who somehow still manages to behave as if He were possessed of a consciousness moving in one direction along the fourth dimension much like our own.

No comments: