I was just fitting a model and realizing that some of the graphs in my paper were all wrong–we seem to have garbled some of the coding of a variable in R. (It can happen, especially in multilevel models when group indexes get out of order.) But the basic conclusion didn’t actually change. This flashed me back to when Gary and I were working on our seats-votes stuff (almost 20 years ago!), and we joked that our results were invariant to bugs in the code.