According to an old post by Dana, I believe - he said something like:
"We don't have all the how's and why's."
PhotoReading is a technique using the subconscious. How do we even know that that truely does exist?
And yes, you did tell us that you returned it. That's my point. 
Poor guy.
Eddy isn't that great, ya know. I warned ya! I warned you all with Can Jedi PhotoRead? Part 2. That topic strikes down Reading Genius and its lies and claims.
It's not practical, that's true. That another point that was made by not only me, and many others, but even the top three PhotoReading ppl'z on LSC - Dana, Pete, and Paul. Well...Dana for sure. *Squints as he thinks.*
Anyways! I've already brought back a 97 on a quiz that was for memorization of vocab. and I used PhotoReading on it. That's good enough for me!
Ramon is right. Just let it go. It's not about the how's and why's. It's about if it a.) causes any harm. And we obviously know the answer to that: NO. B.) does it not work? That's an argued yes. The truth is that you really don't realize its true brilliance until you see it working for you in all its glory.
Concentrating on "why" the public education system teaches math without explaining what it's for will likely be waste of time. Learn the math, and then when the situation arises to use it, BAPOW!
-youngprer
