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https://theconversation.com/entre-le-...nt-la-societe-perd-ses-reperes-122068
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https://theconversation.com/economie-...iment-offert-sans-contrepartie-119704
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https://ploum.net/la-visibilite-nest-pas-un-paiement
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https://www.youtube.com/watch?v=JG6kAfxVcDw
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