Drug testing on animals

Medicine and all other drugs are a lie! We have seen people test drugs on animals and all of them have still gotten the Plague. We as Feudalists know that the only cure for that is more walls. Besides using an animal for drug testing makes it unusable as meat. If you really think you can find a cure to the plague that is better than a wall, you can use an old serf that can no longer tend to his fields. That way the surf is no longer a burden upon the land owner and more proof is added that medicine is evil and a lie.