good question goudy/ursus. i am confused about failure as well. for a while i stayed away from failure completely, not one set to fialure, and my stamina-strength (ability to do mulitple sets with heavy weight) increased greatly, and i got good gains too. but i feel like failure is good too, just finding the right balance is hard. too many sets to failure and i feel like your just demolishing the body, and its not gonna grow from that. i dont get stronger if im demolishing my body with too many sets to failure. i think dorian yates style of training can be very effective if you can limit yourself to just one set per exercise and really push yourself to the limit on that one set... other wise i think staying away from fialure is better, just keep the weights hevay and good form, stop at least 2 reps shy of fialure.