The first third (or so) of Floyd Toole's book is a major contribution to our understanding of how speakers interact with room acoustics to produce pleasing and/or accurate sound. It's a must-read for anyone selling audio equipment, or serious about organizing their listening space.
It's great because it's science -- real science. * Toole begins by assuming nothing -- other than that most (or possibly all) of what we know about room/speaker/listening-position interaction is wrong, then starting over. The results of his and other people's research is often surprising, and sometimes major reversals of "fact".
In looking over the 50 years of Floyd Toole's research, it seems that this is probably the only valid research he's done. He seems intent on proving that what he already thinks is true is true. It would be unfair to take pot shots at his work (however well-aimed) when there isn't enough time or space for proper analysis. So I leave you with the following observation. One of the marks of a valid description or theory is that it provokes an AHA! reaction. The effect is like the last few turns of a Rubik cube that reveal order out of seeming disorder. If you don't experience that reaction, then maybe the writer is wrong (subtle pun intended).
* Dr Land said "We already know the answers. We just haven't asked the right questions." The scientific process is not about finding facts, but asking well-stated questions that, when correctly answered, lead to a deeper understanding of how things fit together.