BLARG! there is a very very good chance that there are other mechanisms for triggering pain responses, like unnatural chemicals, such as concentrated ethenol or

BLARG! there is a very very good chance that there are other mechanisms for triggering pain responses, like unnatural chemicals, such as concentrated ethenol or diesel fuel, photo copier fluid, etc, that can cross the blood brain barier, causing intense pain in many cases, but have little effect if applied topicaly. on the flip side, one rather interesting thing about pain, is that it impossible to trigger pain from a memory, but then there are cases of symptoms of phantom pain in lost limbs, so I feel strongly that there will be new knowledge soon about pain, especialy as there a number of promising non opiod pain relievers that use completly different pathways to block pain.