The Length of Doctoral Dissertations

One person compiled some statistics about the mean length of doctoral dissertations in various fields.

Just to give some context, let me point out the following: Version 1 of my PhD thesis was over 400 pages. Version 2 was about 178 pages. (Also, Version 2 was much better than Version 1.)

And, to better appreciate this length (which I would prefer to call "volume"), take a look at where mathematics lands on the chart at the other end of the link.

(Tip of the cap to Ernie Barreto.)