@NDA: solution intéressante proposée par Gabriel Zucman !
https://www.youtube.com/watch?v=I-KSwAFGtlM
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https://www.youtube.com/watch?time_continue=207&v=pdRV5r8br1U
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http://www.canalacademie.com/ida10759-Social-et-societal.html
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https://www.citizenlab.co/blog/partic...yenne/echelle-participation-citoyenne
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