Whenever I speak to a very good mathematician, one of the first things I notice is they are often sceptical about the tools which other mathematicians are most enthused about. A typical phrase might be: ‘Yeah you could do a regression analysis, but the result is usually bollocks.’ An attendant problem is that people who are not skilled at mathematics tend to view the output of second-rate mathematicians with an high level of credulity, and attach almost mystical significance to their findings. Bad maths is the palmistry of the twenty-first century.