"L'obstacle est constitué comme une connaissance, avec des objets, des relations, des méthodes d'appréhension, des prévisions, avec des évidences, des conséquences oubliées, des ramifications imprévues... Il va résister au rejet, il tentera comme il se doit, de s'adapter localement, de se modifier aux moindre frais, de s'optimiser sur une champ réduit, suivant un processus d’accommodation bien connu" (Brousseau 1983 p.175)
• English : Obstacle
“The obstacle is of the same nature as knowledge, with objects, relationships, methods of understanding, predictions, with evidence, forgotten consequences, unexpected ramifications, etc. It will resist being rejected and, as it must, it will try to adapt itself locally, to modify itself at the least cost, to optimize itself in a reduced field, following a well known process of accomodation.” (Brousseau 1997 p.89)
• English : Obstacle
“The obstacle is of the same nature as knowledge, with objects, relationships, methods of understanding, predictions, with evidence, forgotten consequences, unexpected ramifications, etc. It will resist being rejected and, as it must, it will try to adapt itself locally, to modify itself at the least cost, to optimize itself in a reduced field, following a well known process of accomodation.” (Brousseau 1997 p.89)
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