Chapter 76 in the Conversations of Rav Nachman of Breslov says that one ought to learn as fast as possible. at first it is brought there that he said that all one needs is to say the words in order and to go on. but at the end of that chapter he said to learn as fast as possible. the meaning seems clear that he was not worried if one understands or not. This is mentioned in the gemara but in that chapter the idea is taken to a degree that most people find untenable. Yet those same people that refuse this advice, do you think they go on to learn in depth? Not usually. Rather they give up on the learning. I must say that this kind of learning helps me very much in doing physics. I must add, that after I do the fast learning, I go back over the material, and review it again and again. [THE reason I use this method of learning for both Torah and for Physics-Mathematics is because of the Gra , Joseph ibn Pakuda (the author of the Obligations of the Hearts) and the Rambam. However, I admit there are opinions that admit to the value of learning Torah alone, like the Ramban and Hai Gaon. I probably would have followed this “Only Torah” approach if I could, but for some reason, circumstances forced me out of the yeshiva world. (I really loved being in the yeshiva world, but I think it was not my destiny.) So, I simply had to find a way to make a living. Thus, I ended up going to university, and learning physics and being involved in that for about the seven-year period from 1993 to 2000. Maybe, it was all some aspect of destiny?