How humans and AI can work together to create better businesses | Sylvain Duranton

29,531 views ・ 2020-02-14

TED


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Translator: Ivana Korom Reviewer: Krystian Aparta
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Let me share a paradox.
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For the last 10 years,
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many companies have been trying to become less bureaucratic,
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to have fewer central rules and procedures,
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more autonomy for their local teams to be more agile.
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And now they are pushing artificial intelligence, AI,
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unaware that cool technology
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might make them more bureaucratic than ever.
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Why?
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Because AI operates just like bureaucracies.
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The essence of bureaucracy
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is to favor rules and procedures over human judgment.
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And AI decides solely based on rules.
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Many rules inferred from past data
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but only rules.
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And if human judgment is not kept in the loop,
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AI will bring a terrifying form of new bureaucracy --
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I call it "algocracy" --
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where AI will take more and more critical decisions by the rules
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outside of any human control.
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Is there a real risk?
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Yes.
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I'm leading a team of 800 AI specialists.
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We have deployed over 100 customized AI solutions
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for large companies around the world.
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And I see too many corporate executives behaving like bureaucrats from the past.
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They want to take costly, old-fashioned humans out of the loop
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and rely only upon AI to take decisions.
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I call this the "human-zero mindset."
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And why is it so tempting?
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Because the other route, "Human plus AI," is long,
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costly and difficult.
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Business teams, tech teams, data-science teams
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have to iterate for months
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to craft exactly how humans and AI can best work together.
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Long, costly and difficult.
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But the reward is huge.
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A recent survey from BCG and MIT
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shows that 18 percent of companies in the world
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are pioneering AI,
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making money with it.
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Those companies focus 80 percent of their AI initiatives
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on effectiveness and growth,
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taking better decisions --
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not replacing humans with AI to save costs.
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Why is it important to keep humans in the loop?
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Simply because, left alone, AI can do very dumb things.
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Sometimes with no consequences, like in this tweet.
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"Dear Amazon,
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I bought a toilet seat.
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Necessity, not desire.
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I do not collect them,
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I'm not a toilet-seat addict.
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No matter how temptingly you email me,
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I am not going to think, 'Oh, go on, then,
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one more toilet seat, I'll treat myself.' "
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(Laughter)
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Sometimes, with more consequence, like in this other tweet.
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"Had the same situation
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with my mother's burial urn."
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(Laughter)
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"For months after her death,
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I got messages from Amazon, saying, 'If you liked that ...' "
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(Laughter)
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Sometimes with worse consequences.
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Take an AI engine rejecting a student application for university.
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Why?
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Because it has "learned," on past data,
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characteristics of students that will pass and fail.
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Some are obvious, like GPAs.
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But if, in the past, all students from a given postal code have failed,
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it is very likely that AI will make this a rule
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and will reject every student with this postal code,
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not giving anyone the opportunity to prove the rule wrong.
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And no one can check all the rules,
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because advanced AI is constantly learning.
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And if humans are kept out of the room,
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there comes the algocratic nightmare.
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Who is accountable for rejecting the student?
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No one, AI did.
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Is it fair? Yes.
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The same set of objective rules has been applied to everyone.
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Could we reconsider for this bright kid with the wrong postal code?
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No, algos don't change their mind.
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We have a choice here.
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Carry on with algocracy
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or decide to go to "Human plus AI."
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And to do this,
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we need to stop thinking tech first,
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and we need to start applying the secret formula.
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To deploy "Human plus AI,"
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10 percent of the effort is to code algos;
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20 percent to build tech around the algos,
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collecting data, building UI, integrating into legacy systems;
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But 70 percent, the bulk of the effort,
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is about weaving together AI with people and processes
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to maximize real outcome.
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AI fails when cutting short on the 70 percent.
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The price tag for that can be small,
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wasting many, many millions of dollars on useless technology.
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Anyone cares?
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Or real tragedies:
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346 casualties in the recent crashes of two B-737 aircrafts
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when pilots could not interact properly
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with a computerized command system.
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For a successful 70 percent,
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the first step is to make sure that algos are coded by data scientists
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and domain experts together.
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Take health care for example.
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One of our teams worked on a new drug with a slight problem.
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When taking their first dose,
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some patients, very few, have heart attacks.
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So, all patients, when taking their first dose,
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have to spend one day in hospital,
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for monitoring, just in case.
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Our objective was to identify patients who were at zero risk of heart attacks,
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who could skip the day in hospital.
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We used AI to analyze data from clinical trials,
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to correlate ECG signal, blood composition, biomarkers,
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with the risk of heart attack.
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In one month,
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our model could flag 62 percent of patients at zero risk.
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They could skip the day in hospital.
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Would you be comfortable staying at home for your first dose
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if the algo said so?
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(Laughter)
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Doctors were not.
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What if we had false negatives,
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meaning people who are told by AI they can stay at home, and die?
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(Laughter)
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There started our 70 percent.
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We worked with a team of doctors
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to check the medical logic of each variable in our model.
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For instance, we were using the concentration of a liver enzyme
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as a predictor,
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for which the medical logic was not obvious.
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The statistical signal was quite strong.
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But what if it was a bias in our sample?
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That predictor was taken out of the model.
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We also took out predictors for which experts told us
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they cannot be rigorously measured by doctors in real life.
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After four months,
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we had a model and a medical protocol.
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They both got approved
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my medical authorities in the US last spring,
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resulting in far less stress for half of the patients
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and better quality of life.
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And an expected upside on sales over 100 million for that drug.
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Seventy percent weaving AI with team and processes
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also means building powerful interfaces
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for humans and AI to solve the most difficult problems together.
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Once, we got challenged by a fashion retailer.
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"We have the best buyers in the world.
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Could you build an AI engine that would beat them at forecasting sales?
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At telling how many high-end, light-green, men XL shirts
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we need to buy for next year?
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At predicting better what will sell or not
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than our designers."
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Our team trained a model in a few weeks, on past sales data,
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and the competition was organized with human buyers.
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Result?
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AI wins, reducing forecasting errors by 25 percent.
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Human-zero champions could have tried to implement this initial model
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and create a fight with all human buyers.
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Have fun.
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But we knew that human buyers had insights on fashion trends
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that could not be found in past data.
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There started our 70 percent.
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We went for a second test,
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where human buyers were reviewing quantities
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suggested by AI
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and could correct them if needed.
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Result?
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Humans using AI ...
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lose.
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Seventy-five percent of the corrections made by a human
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were reducing accuracy.
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Was it time to get rid of human buyers?
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No.
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It was time to recreate a model
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where humans would not try to guess when AI is wrong,
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but where AI would take real input from human buyers.
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We fully rebuilt the model
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and went away from our initial interface, which was, more or less,
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"Hey, human! This is what I forecast,
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correct whatever you want,"
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and moved to a much richer one, more like,
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"Hey, humans!
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I don't know the trends for next year.
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Could you share with me your top creative bets?"
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"Hey, humans!
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Could you help me quantify those few big items?
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I cannot find any good comparables in the past for them."
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Result?
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"Human plus AI" wins,
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reducing forecast errors by 50 percent.
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It took one year to finalize the tool.
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Long, costly and difficult.
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But profits and benefits
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were in excess of 100 million of savings per year for that retailer.
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Seventy percent on very sensitive topics
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also means human have to decide what is right or wrong
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and define rules for what AI can do or not,
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like setting caps on prices to prevent pricing engines
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[from charging] outrageously high prices to uneducated customers
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who would accept them.
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Only humans can define those boundaries --
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there is no way AI can find them in past data.
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Some situations are in the gray zone.
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We worked with a health insurer.
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He developed an AI engine to identify, among his clients,
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people who are just about to go to hospital
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to sell them premium services.
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And the problem is,
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some prospects were called by the commercial team
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while they did not know yet
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they would have to go to hospital very soon.
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You are the CEO of this company.
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Do you stop that program?
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Not an easy question.
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And to tackle this question, some companies are building teams,
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defining ethical rules and standards to help business and tech teams set limits
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between personalization and manipulation,
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customization of offers and discrimination,
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targeting and intrusion.
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I am convinced that in every company,
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applying AI where it really matters has massive payback.
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Business leaders need to be bold
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and select a few topics,
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and for each of them, mobilize 10, 20, 30 people from their best teams --
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tech, AI, data science, ethics --
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and go through the full 10-, 20-, 70-percent cycle
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of "Human plus AI,"
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if they want to land AI effectively in their teams and processes.
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There is no other way.
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Citizens in developed economies already fear algocracy.
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Seven thousand were interviewed in a recent survey.
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More than 75 percent expressed real concerns
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on the impact of AI on the workforce, on privacy,
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on the risk of a dehumanized society.
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Pushing algocracy creates a real risk of severe backlash against AI
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within companies or in society at large.
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"Human plus AI" is our only option
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to bring the benefits of AI to the real world.
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And in the end,
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winning organizations will invest in human knowledge,
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not just AI and data.
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Recruiting, training, rewarding human experts.
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Data is said to be the new oil,
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but believe me, human knowledge will make the difference,
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because it is the only derrick available
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to pump the oil hidden in the data.
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Thank you.
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(Applause)
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