"To pull it back to a Corrupted Blood analogy, and something I've been thinking about—one of the critiques we got from a lot of people, both gamers and scientists, was over this idea of griefing," Dr. Lofgren says. "How griefing isn't really analogous to anything that takes place in the real world. People aren't intentionally getting people sick. And they might not be intentionally getting people sick, but wilfully ignoring your potential to get people sick is pretty close to that. You start to see people like 'oh this isn't a big deal, I'm not going to change my behavior. I'm going to the concert and then going to see my elderly grandma anyway.' Maybe don't do that. That's a big takeaway. Epidemics are a social problem... Minimizing the seriousness of something is sort of real-world griefing."