JORD: your good thoughts, especially about pathways, do seem to relate to one discovery that does seem to be well researched and supported: the more modalities (used here in terms of the senses, such as visual, auditory, etc) that are involved in the process of learning, the more powerful/effective that particular learning experience seems to be. For example if you see " 2 +2 = 4" and also hear it, you will be more likely to remember the answer than you would have been if just a single sense had been involved.