On the subject of relative "realness", here's an amusing tidbit from Science News relating to the recent report of neutrinos at FTL speeds:

"An experiment that creates particles called neutrinos has called into question Einstein's theory of special reality. Even though few believe that these results will ultimately hold up, their implications have stirred up quite a fuss.

After painstakingly checking and rechecking their data, physicists working on Italy's OPERA experiment say they have clocked neutrinos traveling faster than the speed of light. According their calculations, there's only a one in a billion chance that what they're seeing is a statistical fluke.

But that doesn't make it real. "...


From this perspective it becomes real when enough agreement is established.

This is a tempting definition.



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