In Dr. Hawkins' August 2002 lecture, about 70 minutes into tape 2, he uses muscle testing to determine the difference between reading a teacher's works that calibrate at a certain level versus being in the teacher's physical presence. He likens the difference to 'amperage,' which I subsequently googled. He basically means that although the energy field is the same, the amount of that energy is much greater in the physical presence of the teacher than in his book.

So if you're wondering if carrying around Eye of the I is just as beneficial as hanging out with the Doc, the answer is no. Could still be helpful though, perhaps I'll try it...

Fascinating stuff.