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Giving Humans the Final Say Can Make AI Decisions Worse

September 14th, 2026
6 mins
Olivier Sibony

When algorithms outperform experts, human oversight may protect legitimacy... but it may also simply restore the errors AI was meant to correct.

Research insights from HEC Paris faculty

Giving Humans the Final Say Can Make AI Decisions Worse

When algorithms outperform experts, human oversight may protect legitimacy... but it may also simply restore the errors AI was meant to correct.

6 mins
Olivier Sibony

Automatic Renewal Can Cost Subscription Firms Subscribers

A field experiment with over a million newspaper readers finds that auto-renewal lifts short-term retention but cuts trial take-up and long-term subscriber reach.

4 minutes
Klaus Miller

Star Scientists Rarely Outshine Their Teams

Research on 555 university inventions finds that stars rarely outperform their teams alone, while rare and complementary matches create the most value.

6 minutes
Denisa Mindruta

AI Data Centers Amplify Grid and Energy Price Risks

New research finds nationwide spillovers from AI data centers, alongside sharp regional price rises, higher emissions and growing grid risks.

7 min
Olivier Darmouni

The Winning Cultures Behind France’s Swimming Golds

The 2026 European Swimming Championships in Paris offer a timely reason to revisit a remarkable transformation studied by Thomas Paris: how a national team can change its rules, practices and underlying beliefs until high performance becomes part of

6 minutes
Thomas Paris

Short-Term Data Can Weaken Long-Term Financial Forecasts

A study of 65 million financial analyst observations finds that short-term alternative data sharpen near-term earnings estimates but reduce the value of longer-term projections.

7 minutes
Thierry Foucault

Disneyland: Talk without Action Risks Eroding Trust

The Disneyland case illustrates what researchers refer to as the "voice veneer" phenomenon in organizations. This concept explains how organizations that appear to listen to employees can still undermine their trust. 

6 minutes
Audrey Holm

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