Most physicists would agree, I believe, that mathematics is the language of physics. Mathematical models are used to describe the physical world. I therefore found it somewhat amusing but disconcerting that a recent paper found a statistically significant negative correlation between mathematical equations in papers and the number of citations those papers receive. See https://zenodo.org/record/58792/files/eq_physics_2pager_2016-07_27_Analysis.pdf If that correlation is not a fluke (always a possibility), do many physicists simply not fully understand the mathematics published by others? Do many physicists suffer from the same math anxiety as many in the general population? Is there a more benign reason?