The idea of the knowledge economy is appealing. The only problem is it is largely a myth. Developed western economies such as the UK and the US are not brimming with jobs that require degree-level qualifications. For every job as a skilled computer programmer, there are three jobs flipping burgers. The fastest-growing jobs are low-skilled repetitive ones in the service sector. One-third of the US labour market is made up of three types of work: office and administrative support, sales and food preparation.