The advantage to hand-washing is that it severely reduces a specific otherwise-easy-to-use vector for disease and there is social pressure due to public restrooms to washing your hands. Can we find something similar for cognitive citizenship? A vector for transmitting bad knowledge, like forwarded emails - maybe in the future I shouldn't just reply with "Nope, Snopes, also stop." but instead ask that the sender include a disclaimer?

How about a vector for transmitting bad cognitive algorithms? That one would be far more valuable to block but I haven't been able to think of a large extant vector at all, much less one that might be attackable.