{"id":66141,"date":"2015-04-09T13:13:00","date_gmt":"2015-04-09T13:13:00","guid":{"rendered":"https:\/\/kepner-tregoe.com\/blogs\/ma-voiture-est-allergique-a-la-glace-a-la-vanille-une-etude-de-resolution-de-probleme\/"},"modified":"2026-06-08T10:09:51","modified_gmt":"2026-06-08T10:09:51","slug":"ma-voiture-est-allergique-a-la-glace-a-la-vanille-une-etude-de-resolution-de-probleme","status":"publish","type":"post","link":"https:\/\/kepner-tregoe.com\/fr\/blogs\/ma-voiture-est-allergique-a-la-glace-a-la-vanille-une-etude-de-resolution-de-probleme\/","title":{"rendered":"Ma voiture est allergique \u00e0 la glace \u00e0 la vanille : une \u00e9tude de r\u00e9solution de probl\u00e8me"},"content":{"rendered":"\n<h2 id=\"h-a-bizarre-complaint\" class=\"wp-block-heading\">Une r\u00e9clamation bizarre<\/h2>\n\n<p class=\"wp-block-paragraph\">Un cadre sup\u00e9rieur d\u2019un grand constructeur automobile renomm\u00e9 a re\u00e7u cette \u00e9trange r\u00e9clamation : <\/p>\n\n<p class=\"wp-block-paragraph\">\u00ab C\u2019est la deuxi\u00e8me fois que je vous \u00e9cris, et je ne vous en veux pas de ne pas avoir r\u00e9pondu, car je devais sembler un peu fou. Dans notre famille, nous avons pour tradition de prendre de la glace en dessert apr\u00e8s le d\u00eener chaque soir. Mais le parfum de glace varie, donc chaque soir, apr\u00e8s avoir mang\u00e9, toute la famille vote pour choisir le parfum que nous devrions prendre. Ensuite, je me rends en voiture au magasin pour l\u2019acheter. \u00bb<\/p>\n\n<p class=\"wp-block-paragraph\">\u00ab J\u2019ai r\u00e9cemment achet\u00e9 l\u2019une de vos nouvelles automobiles et depuis, mes trajets au magasin ont cr\u00e9\u00e9 un probl\u00e8me. Voyez-vous, chaque fois que j\u2019ach\u00e8te de la <em>glace \u00e0 la vanille<\/em>, lorsque j\u2019essaie de rentrer chez moi, ma voiture ne d\u00e9marre pas. Si je prends n\u2019importe quel autre parfum de glace, la voiture d\u00e9marre sans probl\u00e8me. Je tiens \u00e0 ce que vous sachiez que je suis s\u00e9rieux au sujet de cette question, aussi absurde qu\u2019elle puisse para\u00eetre.    <em>Qu\u2019y a-t-il dans cette voiture qui l\u2019emp\u00eache de d\u00e9marrer quand je prends de la glace \u00e0 la vanille ? Alors que, lorsque je prends n\u2019importe quel autre parfum, elle d\u00e9marre parfaitement ! \u00bb <\/em><\/p>\n\n<h2 id=\"h-some-detective-work-to-analyze-the-problem\" class=\"wp-block-heading\">Un travail d\u2019enqu\u00eate pour analyser le probl\u00e8me<\/h2>\n\n<p class=\"wp-block-paragraph\">Le pr\u00e9sident de ce constructeur automobile \u00e9tait naturellement sceptique quant \u00e0 cette lettre. Mais il d\u00e9cida n\u00e9anmoins d\u2019envoyer un ing\u00e9nieur pour v\u00e9rifier. L\u2019ing\u00e9nieur fut tr\u00e8s surpris de rencontrer un homme manifestement prosp\u00e8re et bien \u00e9duqu\u00e9 dans un quartier agr\u00e9able. Il avait pr\u00e9vu de rencontrer l\u2019homme juste apr\u00e8s l\u2019heure du d\u00eener et tous deux mont\u00e8rent dans la voiture et se rendirent au magasin. C\u2019\u00e9tait de la glace \u00e0 la vanille ce soir-l\u00e0 et, effectivement, apr\u00e8s \u00eatre revenus \u00e0 la voiture, elle ne voulait pas d\u00e9marrer.    <\/p>\n\n<p class=\"wp-block-paragraph\">Or, l\u2019ing\u00e9nieur \u2013 \u00e9tant un homme logique \u2013 refusait de croire que la voiture de cet homme \u00e9tait \u00ab allergique \u00e0 la glace \u00e0 la vanille \u00bb. Il d\u00e9cida donc de poursuivre ses visites aussi longtemps qu\u2019il le faudrait pour r\u00e9soudre le probl\u00e8me. Pour y parvenir, il commen\u00e7a \u00e0 prendre des notes. Il nota toutes sortes de donn\u00e9es :    <\/p>\n\n<ul class=\"wp-block-list\">\n<li>Heure de la journ\u00e9e<\/li>\n\n\n\n<li>Type de carburant utilis\u00e9<\/li>\n\n\n\n<li>Temps de trajet aller-retour, etc.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">En peu de temps, il obtint un indice : l\u2019homme mettait moins de temps pour acheter de la vanille que pour n\u2019importe quel autre parfum. <\/p>\n\n<p class=\"wp-block-paragraph\">Pourquoi ? <em>La r\u00e9ponse se trouvait dans l\u2019agencement du magasin.<\/em><\/p>\n\n<p class=\"wp-block-paragraph\">La vanille \u2013 le parfum le plus populaire \u2013 se trouvait dans un pr\u00e9sentoir s\u00e9par\u00e9 \u00e0 l\u2019avant du magasin pour un retrait rapide. Tous les autres parfums se trouvaient au fond du magasin \u00e0 un autre comptoir, o\u00f9 il fallait consid\u00e9rablement plus de temps pour trouver le parfum et passer en caisse.  <\/p>\n\n<h2 id=\"h-identifying-the-true-cause\" class=\"wp-block-heading\">Identification de la v\u00e9ritable cause<\/h2>\n\n<p class=\"wp-block-paragraph\">La question pour l\u2019ing\u00e9nieur \u00e9tait maintenant de savoir pourquoi la voiture ne d\u00e9marrait pas quand cela prenait moins de temps. <\/p>\n\n<p class=\"wp-block-paragraph\">Une fois que le <em>temps<\/em> devint le probl\u00e8me \u2013 et <em>non<\/em> la glace \u00e0 la vanille \u2013 l\u2019ing\u00e9nieur trouva rapidement la r\u00e9ponse : le <em>bouchon de vapeur<\/em>. <\/p>\n\n<p class=\"wp-block-paragraph\">Cela se produisait en r\u00e9alit\u00e9 chaque soir, mais le temps suppl\u00e9mentaire n\u00e9cessaire pour trouver et acheter les autres parfums de glace permettait au moteur de refroidir suffisamment pour d\u00e9marrer. Cependant, lorsque l\u2019homme prenait de la vanille, le moteur \u00e9tait encore trop chaud pour que le bouchon de vapeur se dissipe. <\/p>\n\n<p class=\"wp-block-paragraph\">Quelle est la morale de cette histoire ? <\/p>\n\n<p class=\"wp-block-paragraph\">Bien que l\u2019achat de glace \u00e0 la vanille et le fait que la voiture ne d\u00e9marre pas soient des <strong>\u00e9v\u00e9nements corr\u00e9l\u00e9s<\/strong>, cette histoire d\u00e9montre que <strong>corr\u00e9lation ne signifie pas causalit\u00e9<\/strong>. <\/p>\n\n<p class=\"wp-block-paragraph\">C\u2019est souvent l\u2019erreur que nous commettons lorsque nous tentons de r\u00e9soudre des probl\u00e8mes sur le lieu de travail. <\/p>\n\n<p class=\"wp-block-paragraph\">Cette histoire met en \u00e9vidence des \u00e9l\u00e9ments cl\u00e9s du processus d\u2019Analyse de Probl\u00e8me Kepner-Tregoe qui aident les \u00e9quipes et les organisations \u00e0 \u00e9conomiser du temps et de l\u2019argent. Nous esp\u00e9rons que vous avez appr\u00e9ci\u00e9 cette d\u00e9monstration de r\u00e9solution syst\u00e9matique de probl\u00e8me et la valeur de la distinction entre hypoth\u00e8ses et faits. <\/p>\n\n<p class=\"wp-block-paragraph\">Lisez un <a href=\"https:\/\/kepner-tregoe.com\/blogs\/do-not-trust-the-error-message\/\">r\u00e9cit similaire bas\u00e9 sur une histoire vraie<\/a> de notre administrateur de site web.<\/p>\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/kepner-tregoe.com\/training\/\">Trouver une formation en r\u00e9solution de probl\u00e8me<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Une r\u00e9clamation bizarre Un cadre sup\u00e9rieur d\u2019un grand constructeur automobile renomm\u00e9 a re\u00e7u cette \u00e9trange r\u00e9clamation : \u00ab C\u2019est la deuxi\u00e8me fois que je vous \u00e9cris, et je ne vous en veux pas de ne pas avoir r\u00e9pondu, car je devais sembler un peu fou. Dans notre famille, nous avons pour tradition de prendre de [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":1641,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[238],"tags":[],"ppma_author":[163],"class_list":["post-66141","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-resolution-de-problemes"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.7 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Ma voiture est allergique \u00e0 la glace \u00e0 la vanille : une \u00e9tude de r\u00e9solution de probl\u00e8me - Kepner-Tregoe<\/title>\n<meta name=\"description\" content=\"Ma voiture ne d\u00e9marre pas quand j&#039;ach\u00e8te de la glace \u00e0 la vanille ! 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