Metostopholes

No, you need two edges, one red one blue.

Back during prohibition in the US, there was a product called Vine-Glo that was a brick of grape concentrate. It came with a warning: “After dissolving the brick in a gallon of water, do not place the liquid in a jug away in the cupboard for twenty days, because then it would turn into wine.”

Relevant XKCD:

Title text: Sure, we could stop dictators and pandemics, but we could also make the signs on every damn diagram make sense.