Depending on who you listen to, artificial intelligence may either free us from monotonous labour and unleash huge productivity gains, or create a dystopia of mass unemployment and automated oppression. In the case of farming, some researchers, business people and politiciansthink the effects of AI and other advanced technologies are so great they are spurring a fourth agricultural revolution.

Given the potentially transformative effects of upcoming technology on farming positive and negative its vital that wepause andreflect before the revolution takes hold. Itmust work for everyone, whether it be farmers (regardless of their size or enterprise), landowners, farm workers, rural communities or the wider public. Yet, in arecently published studyled by the researcher Hannah Barrett, we found that policymakers and the media and policymakers are framing the fourth agricultural revolution as overwhelmingly positive, without giving much focus to the potential negative consequences.

The first agricultural revolution occurred when humans started farming around 12,000 years ago. The second was the reorganization of farmland from the 17th century onwards that followed the end of feudalism in Europe. And the third (also known as the green revolution) was the introduction of chemical fertilizers, pesticides and new high-yield crop breeds alongside heavy machinery in the 1950s and 1960s.

The fourth agricultural revolution, much like thefourth industrial revolution, refers to the anticipated changes from new technologies, particularly theuse of AIto make smarter planning decisions and power autonomous robots. Such intelligent machines could be used for growing and picking crops, weeding, milking livestock and distributing agrochemicalsvia drone. Other farming-specific technologies include new types ofgene editingto develop higher yielding, disease-resistant crops;vertical farms; andsynthetic lab-grown meat.

These technologies are attractinghuge amountsof funding and investmentin the quest to boost food production while minimizing further environmental degradation. This might, in part, be related to positive media coverage.Our researchfound that UK coverage of new farming technologies tends to be optimistic, portraying them as key to solving farming challenges.

However, many previous agricultural technologies were also greeted with similar enthusiasm before leading to controversy later on, such as with the firstgenetically modified cropsand chemicals such as the now-bannedpesticide DDT. Given wider controversies surrounding emergent technologies likenanotechnologyanddriverless cars, unchecked or blind techno-optimism is unwise.

We mustnt assume that all of these new farming technologies will be adopted without overcoming certain barriers. Precedent tells us that benefits are unlikely to be spread evenly across society and that some people will lose out. We need to understand who might lose andwhat we can doabout it, and ask wider questions such as whether new technologies will actually deliver as promised.

Robotic milking of cows provides a good example. In our research, a farmer told us that using robots had improved his work-life balance and allowed a disabled farm worker to avoid dextrous tasks on the farm. But they had also created a different kind of stress due to the resulting information overload and the perception that the farmer needed to be monitoring data 24/7.

TheNational Farmers Union(NFU) argues that new technologiescould attractyounger, more technically skilled entrants to an ageing workforce. Such breakthroughs could enable a wider range of people to engage in farming by eliminating the back-breaking stereotypes through greater use of machinery.

But existing farm workers at risk of being replaced by a machine or whose skills are unsuited to a new style of farming will inevitably be less excited by the prospect of change. And theymay not enjoybeing forced to spend less time working outside, becoming increasingly reliant on machines instead of their own knowledge.

There are also potentialpower inequalitiesin this new revolution. Our research found that some farmers were optimistic about a high-tech future. But others wondered whether those with less capital, poor broadband availability and IT skills, and access to advice on how to use the technology would be able to benefit.

History suggests technology companies and larger farm businesses are often the winners of this kind of change, and benefits dont always trickle down to smaller family farms. In the context of the fourth agricultural revolution, this could mean farmers not owning or being able to fully accessthe datagathered on their farms by new technologies. Or reliance on companies to maintain increasingly important and complex equipment.

The controversy surrounding GM crops (which are created by inserting DNA from other organisms) provides a frank reminder that there is no guarantee that new technologies will be embraced by the public. A similar backlash could occur if the public perceive gene editing (which instead involves making small, controlled changes to a living organisms DNA) as tantamount to GM. Proponents ofwearable technology for livestockclaim they improve welfare, but the public might see the use of such devices as treatinganimals like machines.

Instead of blind optimism, we need to identify where benefits and disadvantages of new agricultural technology will occur and for whom. This process must include a wide range of people to help create society-wideresponsible visionsfor the future of farming.

The NFUhas said the fourth agricultural revolution is exciting as well as a bit scary but then the two often go together. It is time to discuss the scary aspects with the same vigor as the exciting part.

David Rose is the Elizabeth Creak Associate Professor of Agricultural Innovation and Extension at the University of Reading. Find David on Twitter @d_christianrose

Charlotte-Anne Chivers is a research assistant at the Countryside and Community Research Institute at the University of Gloucestershire, working primarily on the EU-funded SPRINT and SoilCare projects. Find Charlotte-Anne on Twitter @cachivers

A version of this article was originally posted at the Conversation and has been reposted here with permission. The Conversation can be found on Twitter @ConversationUS

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Viewpoint: Genetics and AI have launched an agricultural revolution. But 'blind techno-optimism' could have harmful consequences - Genetic Literacy...