In a sense you are benefitting because in your own words you are holding it in your memory better.
Technical stuff from textbooks can take as much as 50 hours to learn by the regular method. so you would still be looking at 10 to 16 hours working through that sort of book. Since photoreading puts the information into your inner mind you have more data to help understand formulas better. While the conscious mind still needs to see the workings the inner mind helps move the understanding of the working to a more successful level.
Remember to Photoread your chapters for your study session. Give them a quick Superread and dip or 2 and turn to rapid reading when you feel it necessary (that might be for each chapter but thats OK). You are already gaining more benefits than you would be regular reading by having a better memory of it... that alone saves you having to 'review' too much of the textbooks later something regular readers wind up doing more often.
Keep playing with it. Read for meaning, look for the main and important points of what you need to learn/understand. Move away from the unimportant stuff quickly. (Unimportant is often that stuff you allready know).
Alex
