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请你观察下图,然后指出哪条线更长,是上面一条线呢?还是下面一条?请别急着回答,再仔细观察一会儿,你有答案了吗?实际上它们一样长,不信的话,你可以拿一把尺子亲手量量。如果你是第一次接触这种视觉的错觉试验,一定会感到纳闷和惊讶。古往今来形形色色的视觉错觉不胜枚举,刚才我们一起领略的是其中最著名的一个试验,叫做缪勒-莱耶错觉,也叫箭形错觉。你是不是从这样一个小小的试验开始有点对眼睛的可靠性产生怀疑了呢?我们由眼睛所感受到的图像是事物真实的属性吗?
Please observe the chart below, and then indicate which line is longer. Is it the above line? Or the following one? Please do not rush to answer. Look carefully for a while. Do you have an answer? Actually they are as long as they do not believe. You can take a ruler and measure it by yourself. If you are first exposed to this visual illusion test, you will certainly feel puzzled and surprised. The myriad kinds of visual illusions from the ancient times to the present day are too numerous to mention. The most famous one we have explored earlier is the Muller-Rayey illusion, also known as the arrow-shaped illusion. Did you start to wonder about the reliability of your eyes from such a small experiment? Is the image we feel from our eyes the true nature of things?