It sounded like a bad idea at first, but if the bet is 1 upvote / 1 downvote vs. 89 upvotes/89 downvotes, it could actually be a good use of the karma system. The only way to get a lot of karma would be to consistently win these bets, which is probably as good an indicator for "person worth paying attention to" as making good posts.

I think we should just have a separate prediction market if for some reason we'd rather not use predictionbook.

OPERA Confirms: Neutrinos Travel Faster Than Light

by XiXiDu 1 min read18th Nov 201163 comments


New high-precision tests carried out by the OPERA collaboration in Italy broadly confirm its claim, made in September, to have detected neutrinos travelling at faster than the speed of light. The collaboration today submitted its results to a journal, but some members continue to insist that further checks are needed before the result can be considered sound.


The OPERA Collaboration sent to the Cornell Arxiv an updated version of their preprint today, where they summarize the results of their analysis, expanded with additional statistical tests, and including the check performed with 20 additional neutrino interactions they collected in the last few weeks. These few extra timing measurements crucially allow the ruling out of some potential unaccounted sources of systematic uncertainty, notably ones connected to the knowledge of the proton spill time distribution.


So what does OPERA find ? Their main result, based on the 15,233 neutrino interactions collected in three years of data taking, is unchanged from the September result. The most interesting part of the new publication is instead that the  find that the 20 new neutrino events (where neutrino speeds are individually measured, as opposed to the combined measurement done with the three-year data published in September) confirm the earlier result: the arrival times appear to occur about 60 nanoseconds before they are expected.



Previously on LW: