Here’s a little hypothetical for you: Suppose you have an uncle named Sam. It’s a plausible scenario so far but bear with us.
Now, Sam is a bit of a character. He has been known to conduct medical experiments on other people here and there. He once wanted to see just how bad the symptoms of syphilis could become, so he located a bunch of farmers who already contracted it and kept an eye on their progress. He didn’t tell these farmers that they had the disease, nor did he inform them when treatment for it became available. As we said, Sam’s a character!