If I am given a formula and I am ignorant of its meaning, it cannot teach me anything, but if I already know it what does the formula teach me?

There r few things whch we knw whch r nt capable of mathmatical reasoning nd when these can nt it is a sign dt our knowledge of them is very smal nd confusd nd where a mathmaticl reasing can be had . It is as dark a foly to make use a candle stick as to g

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