Researchers have found a way to get these virtual photons to influence the behavior of a superconductor, ultimately making it worse. That may, in the end, tell us something useful about superconductivity, but it'll probably take a little while.
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But Lee went further than criticizing threads: he argued that the shared-memory vs. message-passing debate was a false dichotomy. Both approaches model concurrency as threads of execution that need to be coordinated. Switching the coordination mechanism from locks to messages doesn’t change the underlying model, it changes the syntax of failure.