XKCD uggggggggghhhhhhhh. Worse than normal cause this time even the science is wrong (claiming glass is not a liquid at room temperature). Glass is both an amorphous solid and a rubbery liquid it has properties of both. And if you stick in a window pane it will flow (it doesn't make window disparities- that is due to manufacturing problems generally- flow is much smaller than that). And I know this one becuase we teach undergraduate chemists/engineers that glass is an amorphous solid and not a liquid because its easier that way but the situation is more complex and we don't have a simple way of classifying it as either.
People use the Tg point (which for glass is a few hundred degrees,d epends on the glass) as evidence it is a solid but Tg are pretty arbitrary, dependent on testing methods and not even clear what they mean.
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