Innovation is typically seen as a cumulative process, with new technologies building on existing knowledge - but our knowledge of how progress in a specific area is influenced by knowledge in other, ‘upstream’ areas is limited. Using US patent data, this column identifies a stable ‘innovation network’ that serves as a conduit for cumulative knowledge development. Technological advances in one field can advance progress in multiple neighbouring fields, but will have a stronger influence on more closely related areas.
Daron Acemoglu, Ufuk Akcigit, William Kerr, 20 January 2017
Lionel Fontagné, Gianluca Orefice, 18 December 2016
Regulation is a barrier to trade. This column uses French firm-level panel data to assess how technical barriers to trade impact firms’ exports. In the presence of stringent barriers, exporters balance the cost of complying with this regulation against the fixed cost of entering a new market. Barriers reduce the number of exporting firms in each sector-destination, especially in sectors with many multi-destination firms.
, 31 October 2016
European banks are in crisis for structural and cyclical reasons. In this video, Alessandro Penati discusses the role of technology for banks. This video was recorded at the Brevan Howard Centre for Financial Analysis in September 2016.
Ian Goldin, Chris Kutarna, 04 October 2016
Some economists see currently faltering GDP growth as part of a longer-term trend for advanced economies, reflecting their belief that the bulk of technological innovation is now behind humankind. This column argues that neither history nor the present-day pace of scientific discovery supports the notion of diminishing returns to technological innovation. The challenge for growth economists is that analytic models are poorly suited to capturing and setting society’s expectations for these impending disruptions.
James Bessen, 22 September 2016
A popular notion is that computer automation leads to major job losses. However, this ignores the dynamic economic responses that involve both changing demand and inter-occupation substitution. Using US data, this column explores the effect of automation on employment growth for detailed occupational categories. Computer-using occupations have had greater job growth to date, while those using few computers suffer greater computer-related losses. The real challenge posed by automation is developing a workforce with the skills to use new technologies.
Daron Acemoglu, Pascual Restrepo, 05 July 2016
Many economists throughout history have been proven wrong in predicting that technological progress will cause irreversible damage to the labour market. This column shows that so far, the labour market has always adapted to the replacement of jobs with capital, using evidence of new types of skilled jobs between 1970 and 2007. As long as the rate of automation of jobs by machines and the creation of new complex tasks for workers are balanced, there will be no major labour market decline. The nature of new technology, and its impact on future innovation potential, has important implications for labour stability.
Ines Stelk, Steven Bosworth, Dennis Snower, 05 July 2016
How the trend towards individualism in societies affects economic welfare is debatable, but it is generally agreed that the role of technological progress in spurring individualism is substantial. Exploring the impact of technological progress in a model of individual utility, this column finds that the direct positive effects of technological progress, in the form of innovation and economic growth, may be offset by the indirect negative effects resulting from greater positional competition at the expense of caring activities.
Daron Acemoglu, Jacob Moscona, James Robinson, 27 June 2016
The ‘great inventions’ view of productivity growth ascribes the excellent growth from 1920 to 1970 in the US to a handful of advances, and suggests that today poor productivity performance is driven by a lack of breakthrough discoveries. This column argues instead that the development of an effective governmental infrastructure in the 19th century accounted for a major part of US technological progress and prominence in this period. Infrastructure design thus appears to have the power to reinvigorate technological progress.
Santiago Caicedo, Robert Lucas, Esteban Rossi-Hansberg, 14 May 2016
A large part of people’s wages rewards the knowledge embedded in them that they use in a production endeavour. Knowledgeable individuals specialise in hard, complicated tasks, while less knowledgeable ones specialise in simpler, more common tasks. This column uses a dynamic model of knowledge accumulation over time and career paths to find an underlying cause for wage inequality in the US over the last few decades. A good explanation for the wage inequality is the discrepancy between the rate of technological change and the rate at which the distribution of knowledge catches up.
Paolo Fulghieri, 13 May 2016
Are booms and busts in the technology sector irrational bubbles? In this Vox Views video, Paolo Fulghieri argues that this pattern is the outcome of rational investors who are uncertainty-averse about future innovation waves. Investors tend to value innovation more when it comes in clubs, whereas when innovation is done in isolation investors are more pessimistic. The video was recorded in April 2016 at the First Annual Spring Symposium on Financial Economics organised by CEPR and the Brevan Howard Centre at Imperial College.
Miguel Morin, 16 April 2016
A longstanding question in economics is whether labour-saving technology affects firms in the medium term by increasing output, by decreasing employment, or both. This column provides evidence on this issue using a novel dataset from the concrete industry during the Great Depression. Cheaper electricity caused a decrease in the labour share of income, an increase in productivity and electrical capital intensity, and a decrease in employment. Furthermore, these effects were stronger in counties where the Depression hit hardest, consistent with the idea of ‘the cleansing effect of recessions’.
Carl Benedikt Frey, Ebrahim Rahbari, 25 March 2016
Back in the 1960s, many thought that the computer and automation would herald less work and more leisure, but the debate has changed. These days, economists debate the extent to which jobs will be lost due to technological innovation. This column explores whether technology is becoming more labour-saving and less job-creating. Concerns over automation causing mass unemployment seem exaggerated, at least for now.
Barry Eichengreen, Arnaud Mehl, Romain Lafarguette, 22 January 2016
There is ongoing debate about the impact of technological progress on the geography of trade and production. One view is that cheap technology has attenuated the effect of distance, while others argue that location still matters. This column explores the issue in the context of foreign exchange markets. It examines how submarine fibre optic cables that link locations to financial hubs have affected the location of transactions. The findings suggest, on balance, that technological progress has made proximity to a trading centre more important.
Michael Spence, Danny Leipziger, James Manyika, Ravi Kanbur, 04 November 2015
The global economy is not working properly. This column argues that to overcome suboptimal results, global aggregate demand must be expanded, the gap between excessively large pools of capital and huge unmet infrastructure needs must be bridged, and finally, the distributional downside of rapid technological advances and global integration must be addressed. Change will come only when a global vision is put forth, coupled with political will.
Jeremiah Dittmar, Skipper Seabold, 19 August 2015
Internet-based communications technologies appear to be integral to the diffusion of social movements today. This column looks back at the Protestant Reformation – the first mass movement to use the new technology of the printing press to drive social change. It argues that diffusion of the Reformation was not driven by technology alone. Competition and openness in the media were also crucial, and delivered their biggest effects in cities where political freedom was most limited.
Charles Goodhart, Philipp Erfurth, 04 November 2014
Most of the world is now at the point where the support ratio is becoming adverse, and the growth of the global workforce is slowing. This column argues that these changes will have profound and negative effects on economic growth. This implies that negative real interest rates are not the new normal, but rather an extreme artefact of a series of trends, several of which are coming to an end. By 2025, real interest rates should have returned to their historical equilibrium value of around 2.5–3%.
Aleksi Aaltonen, Stephan Seiler, 31 October 2014
Many organisations are developing open platforms to create, store, and share knowledge. This column analyses editing data by Wikipedia users to show how content creation by individuals generates significant ‘spillover’ benefits, encouraging others to contribute to the collective process of knowledge production.
Marius Zoican, 20 September 2014
Technological advances in equity markets entered the spotlight following the Flash Crash of May 2010. This column analyses the advantages and disadvantages of algorithmic and high-frequency trading. Ever-faster exchanges do not always improve liquidity. Following a speed upgrade in the Nordic equity markets, effective spreads posted by high-frequency traders increased by 32%.
Avner Offer, 19 September 2014
Victory in World War I relied on three types of energy: renewable energy for food and fodder, fossil energy, and high explosive. This column argues that the Allies had a clear advantage in manpower, coal, and agriculture, but not enough for a quick decision. Mobilisation in continental economies curtailed food production, occasionally to a critical level. Technical competition was a matter of capacity for innovation, not of particular breakthroughs. Coercive military service and rationing of scarce energy and food had egalitarian consequences that continued after the war.
Susan Ariel Aaronson, 14 July 2014
The internet promotes educational, technological, and scientific progress, but governments sometimes choose to control the flow of information for national security reasons, or to protect privacy or intellectual property. This column highlights the use of trade rules to regulate the flow of information, and describes how the EU, the US, and their negotiating partners have been unable to find common ground on these issues. Trade agreements have yet to set information free, and may in fact be making it less free.