I honestly thought that this was going to be about actual liquid types -- from the regular ones that (macroscopically) differ largely in terms of viscosity, to

I honestly thought that this was going to be about actual liquid types -- from the regular ones that (macroscopically) differ largely in terms of viscosity, to non-Newtonian liquids which have non-linear viscosity characteristics, to long-chain (PEG-type) polymers that have slightly unusual flow characteristics, to superfluids that have extremely weird characteristics and zero viscosity. ...I'd read that article. Now I'm starting to think that I should write it.