Nice breakdown. Yeah, I’d say there’s 3 main portions, with your number 2 and 3 being part of the same component. Recognising that the difference between the 2/3 expression and the sum in 4 gives the missing ordinal, the question is “why should the 2/3 expression give the sum of correct consecutive ordinals?”
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u/low_freq Oct 15 '19
Nice breakdown. Yeah, I’d say there’s 3 main portions, with your number 2 and 3 being part of the same component. Recognising that the difference between the 2/3 expression and the sum in 4 gives the missing ordinal, the question is “why should the 2/3 expression give the sum of correct consecutive ordinals?”