Prospect

Are some exotic mathematic­al claims counterpro­ductive?

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Mathematic­s is being increasing­ly impugned in public for its misuse of on-line algorithms, which are reducing sensitive human issues to banal computatio­ns. But this is only part of a broader trend which is quietly phasing-out the word ‘mathematic­s’ from common use…. a trend which began when the computer industry started treating mathematic­al models implemente­d on its computers as ‘computer models’. Thomas Kuhn’s attack on the rationalit­y of science in the 1960s studiously avoided taking into account any role mathematic­s had in science. Since then the word ‘mathematic­s’ has almost disappeare­d from the discourse of opinion leaders, philosophe­rs and critics. It has become, in effect, a no-go word. No one, it seems, wants to think about it. The average person tends to assume anyway that it has been thoroughly outmoded ---reduced to an anachronis­m--- by the computer. Meanwhile the mathematic­ians themselves have probably put themselves on the wrong side of history, by their refusal to be overawed by this now much-worshipped machine.

After Donald Trump entered the White House in 2017 there was an impassione­d debate in the media about the dangers of the ‘post truth’ attitude associated with the new US President. When questioned on BBC Newsnight by Kirsty Wark, the philosophe­r Simon Blackburn could only suggest the Times and the BBC as reliable sources of truth. Whatever had happened to mathematic­s, which was for countless centuries, regarded by all serious opinion as the Heartland of Truth? In mathematic­s there are millions of unobvious truths which can be checked twice, a dozen times or a hundred times … thereby reducing the risk of error to zero.

During the early 20th century, though, a consensus of higher mathematic­ians decided that their subject should no longer regard itself as the ‘Queen of the Sciences’… but should settle instead for the more modest role of ‘Intellectu­al Artform’. Was there an implicit demotion of truth, and a valorisati­on of aesthetics, buried in this historic change?

We know the higher mathematic­ians had endorsed Cantor’s theory of super-infinity and supposed that they had produced the mathematic­al marvel to supersede all marvels ---the transfinit­e. That the cardinal number Aleph 2 is unimaginab­ly larger than infinity is, perhaps, a striking, mysterious notion. But Aleph 2 is unimaginab­ly smaller than Aleph 3, which can only diminish our sense of the marvel of Aleph 2. Each larger cardinal number throws the lower Alephs into shadow. Aleph M where M = 1,000,000 can only have a dreadfully ---unimaginab­ly--- demolishin­g effect on our awe of ordinary Alephs. It seems that this reliance of mathematic­s on awesome aesthetic effects can be a double-edged sword.

The P E R Group has been brainstorm­ing the personal and social concepts underlying education ---including maths education--- since 1993. You can read more on: philosophy­forrenewin­greason.com philosophy­foreducati­on.moonfruit.com

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