QI Series 18: Quantity & Quality | With James Acaster, Bridget Christie and Joe Lycett 

Oof, not even options for the AI generated CC. Sometimes uploads take a few hours for the CC to work, if they aren't uploaded along with the video(idk how the hell it all works, but some people make it happen), maybe that is the case.

❤

The aviation paint may be titanium oxide, but regular paint uses ground up mineral as its white pigment. The whitest in the world came from western Massachusetts. I used to occasionally pick up product there, until the century old facility closed when paint manufacturers decided to go with a lesser mineral from China. They used inferior sections of rock as crushed stone around the entire facility and was absolutely blinding on a sunny day.

I agreed so went to have a look, turns out QI is right but has omitted some information? Per wikipedia: Different road surfaces produce different kinds of skid marks, sometimes also referred to as scuff marks or tire marks. On asphalt road surfaces, skid marks are usually the result of bituminous oils in the asphalt that are heated because of the friction of braking or accelerating and rise to the surface, leaving dark marks.[1] This kind of mark on asphalt can last for months or even a year or two if they are particularly dark and the roadway is not well traveled. On other road surfaces, such as concrete, the marks result from the deposition of tire compounds onto the surface of the roadway. This kind of skid mark is typical of airport runways, which need to be periodically cleaned to remove deposited debris that reduce the frictional coefficient of the runway.[2][3] The durability of these marks depends on a number of factors, including road use, tire compounds, weather, and frequency of road cleaning.

Interesting! How about skid marks on cloth?