In a footnote to the previous post, I suggested that a recent collaboration would lower my Erdős Number to 5.
On the basis of having checked a long time ago, I knew that my Erdős Number was at most 6 on account of having coauthored with Craig Callender.
Since then, however, Craig has also collaborated with more people. So his Erdős Number went down to 4 years ago, meaning that mine was already 5 or less. The new paper just means that there are multiple paths by which I’m entitled to an Erdős Number of 5.1