I would propose the unit of "Cuil". 1 Cuil is present when a piece of information causes permanent PTSD in 50% of the people viewing it within 1 week. 0.1 Cuil

I would propose the unit of "Cuil". 1 Cuil is present when a piece of information causes permanent PTSD in 50% of the people viewing it within 1 week. 0.1 Cuil cause PTSD in 5% of the people viewing it and so forth. Measurements over 2 Cuil express timeframes shorter than 1 Week. So 100 Cuil would cause permanent PTSD symptoms within 8 hours. Alternatively, you measure how long people remember the video vividly and express the danger as the half life of the information related to it's damage.