Immediately prior to the Industrial Revolution and running chronologically, these included the th  th  th  windmill in the 12 century, the mechanical clock in the 13 , the cannon in the 14 , the printing press in the th  th  th 17  15 , the postal service in the 16 and the telescope and microscope in the 17 . It will surprise no-one that waves of innovation, big and small, have been lapping the shores of society for the entirety of human civilisation. In other words, while ideas and innovation may well be a necessary condition  14  Van Reenen et al (2010), for example, document the economic impact of ICT. See Bughin et al (2017) and Haldane (2018), for example. Flohr (2016), for example, discusses innovation in Roman society. 17 Clark (2009). 15 16  5  All speeches are available online at www.bankofengland.co.uk/speeches  5  for economic growth, the historical record suggests they may not themselves have been sufficient. Other forces appear to have been at play, translating these ideas into sustained growth in living standards. What might those forces be? I want to provide two different, but complementary, lenses on the growth story. The first focusses on a rather broader set of “capitals” – not just physical capital (plant and machines) but human (skills and expertise), intellectual (ideas and technologies), infrastructural (transport and legal systems), social (co-operation and trust) and institutional (national and civic, private and public) capital.
43  12  All speeches are available online at www.bankofengland.co.uk/speeches  12  Typically, the two sides of this argument are taken to be in a secular struggle: the dark forces of secular stagnation pitted against the dynamic forces of secular innovation. Yet in practice, both arguments have merit. They are certainly not mutually incompatible. It is perfectly possible to imagine a world of rapid innovation which nonetheless leaves large swathes of society in its slipstream. More than that, recent research suggests this is a likely outcome of the Fourth Industrial Revolution. There are good conceptual grounds for thinking the displacement effects of the Fourth Industrial Revolution may be larger than ever-previously. Every industrial revolution has resulted in a hollowing-out, typically of mid-skilled tasks. Historically, that has meant largely manual, labour-intensive tasks. Machine has replaced human in activities that are routine and repetitive. The future could well be very different. For example, the dawning of AI means that humans will no longer have the cognitive playing field to themselves. Thinking or non-routine tasks may increasingly be taken up by machines. They will be able to process more quickly, more cheaply and with fewer errors than their human counterpart, at least in some activities. That could make the hollowing-out of human tasks, now cognitive as well as manual, far greater than ever before. 48  A cottage industry has emerged over recent years manufacturing estimates of job loss that might result from 49  this rise of the robots.