Seeing is not Believing
Ladies and gentlemen, today the topic of my speech is Seeing is not Believing.
We are always believing in our eyes. That is to say, we think what we have seen is the truth. However, your eyes sometimes deceive your brain. For example, you see a picture that shows there is a magic cube on the table. But in fact, there is only a piece of hexagon paper on the table. You see matters in three dimensions in your daily life, whereas, when you are looking at a picture, it shows a two dimension image. That phenomenon is called collimation error in the Physics. And there is another miraculous phenomenon called mirage. The people who live seaside or in big mountains can see it suddenly appears a high building in the distance at times. They may be shocked at this, but the principle is easy to understand. The reason of mirage is that when light travels through air with plentiful water vapor, it will be reflected. If there is just right a building on the way of light, its image can be seen from a distance. You’re swindled by your eyes again！Well, if you think what I said are too professional and incomprehensible, I’ll take another example from life.
When you see the round moon is getting more and more bend, do you cry out：There is someone eating the moon! Of course not. When you see David Copperfield sawing off his own waist with electric saw, do you think he will die? Of course not. When you see the sun is bigger than other time in the morning, do you consider that the sun is stretching transformation? Of course not. If I say these, you may even laugh at me. But it’s not a small problem, please attention at this example. When you catch sight of a bagger in rag, is your sympathy in flood? Wait! Is he a real bagger? Is he veritably in predicament and too poor to have a meal? It’s not always credible. Maybe he is only a person who is lazy in working, so he chooses to be a pitiable bagger to get money quickly. If you show mercy upon him, he will be proud of his intrigue. Then he will hoodwink other people. As a result, there will breed more and more“baggers”.
It is to say that we cannot believe in our own eyes? No. We must receive information by watching matters. If we could seriously distinguish what we have seen is true or fault, we will see issues clearly. We can get message partly from the sight, but not all.
That’s all for me. Thank you for your listening and attention.
