来自《耶鲁大学开放课程：心理学导论 第7集》
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why vision is hard,视觉为什么是个难题 -
but crudely, you got a two-dimensional retina但简言之 你的视网膜是二维平面 -
and you have to figure out a three-dimensional world.却要用它来识别三维的世界 -
How do you do it?你是怎么做到的呢 -
And the answer once again is assumptions or cues.答案依然是 通过线索或猜测 -
There are certain assumptions the visual system makes视觉系统会做出一些假定 -
that aren't always right但并不一定正确 -
and in fact,而且事实上 -
in cases of visual illusions, can be wrong在视觉错觉中 这些假定就是错的 -
but will guide you但却能指导你 -
to perceive the world in a correct and accurate way.以恰当准确的方式来感知这个世界 -
So for example, there is binocular disparity.例如 我们有双眼视差