If you go down to the river, you may see a fisherman. Ask him — they are almost always hims — whether a hook in a fish’s mouth hurts the fish, and you’ll hear what I always hear: “No. Fish don’t have any feelings. They don’t feel pain. A hook doesn’t hurt them.” If you go down to the stable, you may see a rider. Ask her — they are almost always hers — whether a bit in a horse’s mouth hurts the horse, and you’ll hear what I hear: “No. Even a very severe bit, in the right hands, can transmit extremely subtle, nuanced signals that cause no pain to the horse.”
Logic tells me that this can’t be true.