The kid is smart, but his entire explaination is flawed.
For his description of an organism perceiving his 3 dimensional world in only 2 dimentions assumes monoscopic vision, and ignores stereoscopic vision with its resultant perception of depth... Perception of the 3rd dimention. This analogy, which he interpolates both backward into a 2 dimentional, and forward into a 4 dimentional world likewise carries with it the same flaw.... dumb ass.
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