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Qiaochu_Yuan comments on Visual Mental Imagery Training - Less Wrong Discussion

20 Post author: GuySrinivasan 19 February 2013 10:21PM

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Comment author: RichardKennaway 19 February 2013 11:45:36PM 3 points [-]

Can you solve problems in geometry in your head? For example: How many edges does a dodecahedron have? Prove that the medians of a triangle are concurrent. How long is the altitude of a regular tetrahedron? How many Platonic solids are there in 4 dimensions?

Comment author: Qiaochu_Yuan 20 February 2013 12:46:29AM 6 points [-]

How is classifying Platonic solids in 4 dimensions a reasonable test of mental imagery?

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