L'homme sur le banc:
The sound of my shout spreads at 360 metres a second along the boulevard. Supposing you could travel faster than the sound. You shall overtake it and hear it again. On the other hand had you started before it, at this same speed, at 400 metres a second the shout wouldn't overtake you and you wouldn't hear a thing. You understand? During the last century, physicists all thought the same was true of light. Not at all. You can't catch light. You can't pass light. It's an absolute. Einstein came up with a rather disturbing explanatory model.According to this model, the time we live the speed we move! at, the space we occupy are relative to our speed. Suppose we have the same watch, set in the same way. You travel by plane, I stay here. Your watch goes less fast because the time each of us lives in is different. Obviously, the difference is minute. So minute we can't detect it. But if I now flew in a rocket at 990% of the speed of light and came back to Earth a day later, you will have lived 18 years, and me, 24 hours. The space I occupy, during that time, would become very small, but my mass, let's say my body, would be harder to pull than a thousand freight trains. Taking this theory to its conclusion, we come to think that at the beginning, the universe was just a quantity of matter no bigger than a ping-pong ball which exploded 10 to 20 billion years ago. Let's say 14, more likely. It took 4 billion years for the Milky Way, our galaxy, to appear. 10 billion years ago, before the birth of the solar system. Our Earth dates back 4.5 billion years. In the beginning, we could have touched the Moon with our hand. The Earth cooled off but it took one or two billion years to create the atmosphere, then water. Reptiles date from two or three billion years. Man, probably a million. Imagine that all this time is represented by a 24-hour day. The Stone Age would begin at five minutes to midnight, virtually at the end of the 24 hours. The birth of Christ at one minute to midnight. Most surprising of all, we are here, we human beings, tiny bubbles lost in the immensity, and we have the capacity to understand all that. Because the miracle is that all is logic. If there is a god, he may not be a softie, but he's certainly a very good mathematician.

Film

À l'aventure (2009)

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