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slightly off-topic, but the images in the article illustrate it beautifully: I think many people don't realise (I didn't) what an amazing skill it is to be able to read handwriting (cursive). I took it for granted to be able to read hand-written German, English, Spanish, and totally forgot that it must have taken me some time as a kid to acquire that skill (beyond reading and writing generally). However, when I studied Chinese for a bit, the (printed) characters are tricky to start with, but reading a fluent writer's handwriting ("unconstrained", as they call it in the article) is nigh impossible. I think stroke order is hugely important, in that it forms the conventions for fast abbreviated writing. For example, the "mouth" radical, a square, "口", when written quickly basically looks like a lower-case "b", because the left lower stroke comes first, then top and right in one stroke, then the bottom stroke. More complicated characters basically become a squiggle, and it's really magical, if you think about it, that you can just read it. I mean, look at figures 5, 6, 7 in that article. For me, a nice illustration of Moravec's paradox of AI [1]: what we think is difficult (chess, differentiation, ...) is easy, and what we think is easy (reading handwriting, putting an egg in the fridge, walking (!) and opening a door [2]) is hard... [1] link [2] this video ("A Compilation of Robots Falling Down at the [2015] DARPA Robotics Challenge")