CamDavidsonPilon/Probabilistic-Programming-and-Bayesian-Methods-for-Hackers — pull request #133 by tlevine (2013-09-11 02:07:29+00:00)
Title: non-fundamentelness of probabilities

Since there are no units for these graphs, it is unclear whether they are histograms with counts along the y-axes or probability mass functions with probabilties along the y-axes.

In the later case, I found it slightly confusing that there could be probabilities on both axes, so I added this note to explain that the text is referring to the x-axis probabilities.