It is kinda funny you recommend those books as a reaction to the linked book.

> Nowadays, we expect such matters to be determined by empirical evidence, not by majority opinion. This book is concerned with the empirical evidence concerning the relative legibility of serif typefaces and sans serif typefaces

Meanwhile Buttericks books are very much "some guys opinion". Granted, that guy has a big passion, but at the end of the day, his books are not grounded in empirical evidence.