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错觉是人对客观事物不正确的知觉,即人类感觉器官对客观事物和现象的不正确判断或歪曲。在日常生活中,错觉现象的产生很普遍。比如,一公斤铁和一公斤棉花的物理重量相同,但人们用手提起比较时会觉得一公斤铁比一公斤棉花重得多。这是因为人们对当前事物的感知往往受到过去经验的影响,或者说人们总是在旧有经验的基础上感知当前事物的。经验告诉人们铁重棉花轻,因此当人们用手掂它们时,就产生了错觉。
The illusion is that human perception of objective things is inaccurate, that is, the incorrect judgment or distortion of human sense organs on objective things and phenomena. In everyday life, the phenomenon of illusion is common. For example, one kilogram of iron and one kilogram of cotton have the same physical weight, but when one compares them by hand, one kilogram of iron is considered to be much heavier than one kilogram of cotton. This is because people’s perception of current things is often influenced by past experience, or people always perceive current things on the basis of old experience. Experience tells people that iron is heavy and cotton is light, so when people use them to lick them, they have an illusion.