{"id":6484,"date":"2021-09-14T16:06:52","date_gmt":"2021-09-14T14:06:52","guid":{"rendered":"https:\/\/www.mathweb.fr\/euclide\/?p=6484"},"modified":"2022-01-27T16:34:05","modified_gmt":"2022-01-27T15:34:05","slug":"jt-de-tf1-du-13-septembre-2021-les-verificateurs","status":"publish","type":"post","link":"https:\/\/www.mathweb.fr\/euclide\/2021\/09\/14\/jt-de-tf1-du-13-septembre-2021-les-verificateurs\/","title":{"rendered":"JT de TF1 du 13 septembre 2021: les v\u00e9rificateurs?"},"content":{"rendered":"<p>Le 13 septembre au soir, dans le JT de TF1, nous avons assist\u00e9 \u00e0 l&#8217;assassinat en direct des math\u00e9matiques dans la rubrique intitul\u00e9e &#8220;les v\u00e9rificateurs&#8221;. Chronique de l&#8217;assassinat pas \u00e0 pas&#8230;<\/p>\n<p><!-- \/wp:post-content --><!-- wp:more --><\/p>\n<p><!--more--><\/p>\n<p><!-- \/wp:more --><!-- wp:heading --><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Au menu sur cette page...<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.mathweb.fr\/euclide\/2021\/09\/14\/jt-de-tf1-du-13-septembre-2021-les-verificateurs\/#JT_de_TF1_rubrique_%E2%80%9CLes_verificateurs%E2%80%9D_la_video\" >JT de TF1, rubrique &#8220;Les v\u00e9rificateurs&#8221;: la vid\u00e9o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.mathweb.fr\/euclide\/2021\/09\/14\/jt-de-tf1-du-13-septembre-2021-les-verificateurs\/#JT_de_TF1_rubrique_%E2%80%9CLes_verificateurs%E2%80%9D_la_logique_de_la_journaliste_et_de_son_equipe\" >JT de TF1, rubrique &#8220;Les v\u00e9rificateurs&#8221;: la logique de la journaliste et de son \u00e9quipe<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.mathweb.fr\/euclide\/2021\/09\/14\/jt-de-tf1-du-13-septembre-2021-les-verificateurs\/#%E2%80%9C150_milliards_cumules%E2%80%9D\" >&#8220;150 milliards cumul\u00e9s&#8221;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.mathweb.fr\/euclide\/2021\/09\/14\/jt-de-tf1-du-13-septembre-2021-les-verificateurs\/#JT_de_TF1_rubrique_%E2%80%9CLes_verificateurs%E2%80%9D_%E2%80%9Cla_masse_salariale_ferait_plus_que_doubler%E2%80%9D\" >JT de TF1, rubrique &#8220;Les v\u00e9rificateurs&#8221;: &#8220;la masse salariale ferait plus que doubler&#8221;<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.mathweb.fr\/euclide\/2021\/09\/14\/jt-de-tf1-du-13-septembre-2021-les-verificateurs\/#Que_conclure\" >Que conclure ?<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"JT_de_TF1_rubrique_%E2%80%9CLes_verificateurs%E2%80%9D_la_video\"><\/span>JT de TF1, rubrique &#8220;Les v\u00e9rificateurs&#8221;: la vid\u00e9o<span class=\"ez-toc-section-end\"><\/span><\/h2>https:\/\/www.mathweb.fr\/euclide\/wp-content\/uploads\/2021\/09\/JT-TF11-1.mp4<p><!-- wp:paragraph --><\/p>\n<p>Cette vid\u00e9o est &#8220;visible&#8221; sur la page <a href=\"https:\/\/www.tf1.fr\/tf1\/jt-20h\/videos\/multiplier-par-deux-le-salaire-des-enseignants-serait-il-possible-08216172.html\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.tf1.fr\/tf1\/jt-20h\/videos\/multiplier-par-deux-le-salaire-des-enseignants-serait-il-possible-08216172.html<\/a> (je mets &#8220;visible&#8221; entre guillemets car sur Firefox, m\u00eame en ayant enlev\u00e9 AdBlock, elle ne s&#8217;affiche pas&#8230; J&#8217;ai donc d\u00fb all\u00e9 sur Chrome! Quelle honte&#8230;).<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:heading --><\/p>\n<h2><span class=\"ez-toc-section\" id=\"JT_de_TF1_rubrique_%E2%80%9CLes_verificateurs%E2%80%9D_la_logique_de_la_journaliste_et_de_son_equipe\"><\/span>JT de TF1, rubrique &#8220;Les v\u00e9rificateurs&#8221;: la logique de la journaliste et de son \u00e9quipe<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><!-- \/wp:heading --><\/p>\n<p><!-- wp:heading {\"level\":3} --><\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E2%80%9C150_milliards_cumules%E2%80%9D\"><\/span>&#8220;150 milliards cumul\u00e9s&#8221;<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><!-- \/wp:heading --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p>Le premier r\u00e9sultat annonc\u00e9 est ce &#8220;150 milliards cumul\u00e9s en plus&#8221;, bas\u00e9 sur les 50 milliards d&#8217;euros que co\u00fbteraient le personnel de l\u2019\u00c9ducation Nationale (d\u00e9j\u00e0, ici, il y a un soucis car parmi ce personnel, il n&#8217;y a pas QUE les enseignants, les chefs d&#8217;\u00e9tablissement et les documentalistes, comme dit la journaliste &#8211; qui au passage ne consid\u00e8re pas les documentalistes comme des enseignants&#8230; \u00e7a va leur faire plaisir! &#8211; il y a aussi les personnes sans qui les coll\u00e8ges et lyc\u00e9es seraient de grosses poubelles: les agents d&#8217;entretien).<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p>Sa logique est la suivante: si on augmente le salaire de 20%, cela repr\u00e9sente :<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:list --><\/p>\n<ul>\n<li>10 milliards en plus la premi\u00e8re ann\u00e9e,<\/li>\n<li>donc 20 milliards la deuxi\u00e8me ann\u00e9e,<\/li>\n<li>puis 30 milliards la troisi\u00e8me ann\u00e9e,<\/li>\n<li>et 40 milliards la quatri\u00e8me,<\/li>\n<li>enfin 50 milliards la cinqui\u00e8me ann\u00e9e.<\/li>\n<\/ul>\n<p><!-- \/wp:list --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p>Donc, cumul\u00e9s, tous ces nombres donnent 10+20+30+40+50=150 milliards. Le compte est bon.<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p>Sauf que&#8230; Sauf que le graphique indique &#8220;+20%&#8221; chaque ann\u00e9e&#8230; ce qui repr\u00e9sente un coefficient multiplicateur de 1,2 (pour passer d&#8217;un nombre au suivant, on multiplie par 1,2). Et l\u00e0, ce n&#8217;est pas la m\u00eame chose:<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:list --><\/p>\n<ul>\n<li>50 x 1,2 = 60 milliards la premi\u00e8re ann\u00e9e, soit +10 milliards par rapport \u00e0 50 milliards;<\/li>\n<li>60 \u00d7 1,2 = 72 milliards la deuxi\u00e8me ann\u00e9e, soit +12 milliards par rapport \u00e0 50 milliards;<\/li>\n<li>72 \u00d7 1,2 = 86,4 milliards la troisi\u00e8me ann\u00e9e, soit 36,4 milliards par rapport \u00e0 50 milliards;<\/li>\n<li>86,4 \u00d7 1,2 = 103,68 milliards la quatri\u00e8me ann\u00e9e, soit +53,68 milliards par rapport \u00e0 50 milliards;<\/li>\n<li>103,68 \u00d7 1,2 = 124,416 milliards la cinqui\u00e8me ann\u00e9e, soit +74,416 milliards par rapport \u00e0 50 milliards.<\/li>\n<\/ul>\n<p><!-- \/wp:list --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p>Au final, c&#8217;est +10+12+36,4+53,68+74,416 = 186,496 milliards, et non +150 milliards.<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:heading {\"level\":3} --><\/p>\n<h3><span class=\"ez-toc-section\" id=\"JT_de_TF1_rubrique_%E2%80%9CLes_verificateurs%E2%80%9D_%E2%80%9Cla_masse_salariale_ferait_plus_que_doubler%E2%80%9D\"><\/span>JT de TF1, rubrique &#8220;Les v\u00e9rificateurs&#8221;: &#8220;la masse salariale ferait plus que doubler&#8221;<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><!-- \/wp:heading --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p>Pour finir, la journaliste conclut que la masse salariale de l\u2019\u00c9ducation Nationale ferait plus que doubler. C&#8217;est vrai !<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p>Car, nous l&#8217;avons vu, nous passerions de 50 milliards \u00e0 186,496 milliards ! Faisons un petit calcul:( frac{186,496-50}{50}=2,72992.) Le taux d&#8217;\u00e9volution est donc de 273%, et le coefficient multiplicateur est donc de 373%=3,73&#8230; bien sup\u00e9rieur \u00e0 2&#8230; Il est m\u00eame plus proche de 4 que de 2!<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><br><\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:heading --><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Que_conclure\"><\/span>Que conclure ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><!-- \/wp:heading --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p>Ce n&#8217;est pas la premi\u00e8re fois que nous assistons \u00e0 un massacre math\u00e9matiques en direct dans un JT (les plus anciens se souviennent sans doute de celui de France 2 dans lequel le journaliste affirmait fi\u00e8rement que si l&#8217;on faisait +6% pendant 5 ans, \u00e7a revenait \u00e0 faire +30% sur les 5 ann\u00e9es).<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:embed {\"url\":\"https:\/\/www.youtube.com\/watch?v=SlfsDdmfwnQ\",\"type\":\"video\",\"providerNameSlug\":\"youtube\",\"responsive\":true,\"className\":\"wp-embed-aspect-4-3 wp-has-aspect-ratio\"} \/--><\/p>\n<p><!-- wp:paragraph \/--><\/p>https:\/\/www.youtube.com\/watch?v=SlfsDdmfwnQ<p>Et s&#8217;ils se trompent sur des calculs que l&#8217;on fait au coll\u00e8ge, ne disent-ils pas d&#8217;autres \u00e2neries dans d&#8217;autres domaines ?<\/p>","protected":false},"excerpt":{"rendered":"<p>Le 13 septembre au soir, dans le JT de TF1, nous avons assist\u00e9 \u00e0 l&#8217;assassinat en direct des math\u00e9matiques dans la rubrique intitul\u00e9e &#8220;les v\u00e9rificateurs&#8221;. Chronique de l&#8217;assassinat pas \u00e0 pas&#8230;<\/p>\n","protected":false},"author":1,"featured_media":6489,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21,6],"tags":[],"class_list":["post-6484","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-enseignement","category-mathematiques"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>JT de TF1 du 13 septembre 2021: les v\u00e9rificateurs? - Mathweb.fr<\/title>\n<meta name=\"description\" content=\"Le 13 septembre au soir, dans le JT de TF1, dans la rubrique intitul\u00e9e &quot;les v\u00e9rificateurs&quot;, nous avons assist\u00e9 \u00e0 des calculs \u00e9tranges...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.mathweb.fr\/euclide\/2021\/09\/14\/jt-de-tf1-du-13-septembre-2021-les-verificateurs\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"JT de TF1 du 13 septembre 2021: les v\u00e9rificateurs? 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