Re: Dark-Matter Universe?

2021-10-26 Thread Lawrence Crowell
On Monday, October 25, 2021 at 3:30:45 PM UTC-5 jameswr...@gmail.com wrote: > On Monday, October 25, 2021 at 9:53:26 PM UTC+2 spudb...@aol.com wrote: > >> Sorry LC, you as a physicist probably don't have time or interest to >> answer PB's assertions, but refutation rationally requires a person

Re: Computers and Quantum Supremacy

2021-10-26 Thread 'Brent Meeker' via Everything List
Yet it's not clear that they actually demonstrated quantum supremacy.  See https://scottaaronson.blog/?p=5868 Brent On 10/26/2021 7:45 AM, John Clark wrote: In yesterday's issue of the journal Physical Review Letters researchers in China report they have performed a calculation in a problem

NYTimes.com: How to Map a Fly Brain in 20 Million Easy Steps

2021-10-26 Thread John Clark
Up to now the only complete connectome ( map of internal brain connections) belong to the nearly microscopic worm C. elegans she had a brain of only 302 neurons but Gerald Rubin wanted to do better so in 2014 he started the map all the connections in a single 5 day old female fruit fly which

Computers and Quantum Supremacy

2021-10-26 Thread John Clark
In yesterday's issue of the journal Physical Review Letters researchers in China report they have performed a calculation in a problem that has 10^43 dimensions in Hilbert space 10^24 times faster than the largest conventional supercomputer using the best conventional algorithm can. The

RE: Dark-Matter Universe?

2021-10-26 Thread Philip Benjamin
From: everything-list@googlegroups.com Everything List Subject: Re: Dark-Matter Universe? [Philip Benjamin] What is dark-matter is not the issue here! That is for physics to determine. The moment physicists speak of dark-matter universe, then it is the domain of chemistry also. No