Author’s Note Added October 19, 2023: The following blog post makes specific references to a promising announcement about a substance known as LK-99. It was said at the time that third-party verification should come quickly. It seems LK-99 was not, in fact, a room temperature super-conductor. We will keep this blog post up, as it contains a lot of other good content, but we want to clarify at the top that this was written when enthusiasm was still high that a major breakthrough had been made. As a matter of policy, this is not a blog that covers breaking news…