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♪ [music] ♪

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[Joana] Pour mieux comprendre nos choix,

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il faut d'abord comprendre les éléments

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qui interviennent
dans la prise de décisions.

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Elles ne sont pas toutes
sous notre contrôle.

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Constamment et invisiblement,
le monde détermine les prix

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des produits et services.

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Prenez par exemple
le prix d'une tasse de café.

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Il dépend de nombreuses variables.

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Pensez à des choses comme culture,
démographie, coût des grains, temps,

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l'offre et la demande en pétrole,

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même le loyer cher
du café du coin.

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Vous saisissez l'idée.

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Toute cette activité économique
se retrouve simplifiée comme par magie

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dans le prix d'une tasse de café.

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Qu'en est-il de votre salaire --
le prix d'une heure de travail ?

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Cela dépend de vous, bien sûr --
de vos compétences et de votre effort.

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Mais il dépend aussi de nombreux facteurs
que vous ne contrôlez pas.

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Par exemple --
la demande pour vos services,

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la concurrence à proximité,
et même le plaisir à faire votre travail.

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Vous prenez des décisions tous les jours
sur quoi acheter,

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comparant des centaines
de produits et de services.

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Il y a tellement de choix.

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