The width of the space shuttle is determined by the horse's butt----criteria determine status

Original: http://blog.csdn.net/qcgrxx/article/details/7533588

The width of the space shuttle is determined by the horse's butt.

standard between two rails of modern railways The distance is 4.85 feet, about 1 .435 M, But a considerable number of people do not know why to adopt this standard? Originally, the early railways were designed by people who built trams, and four feet and 8.5 inches were the standard used by trams.

So, where does the standard of tram come from?

The first person to build a tram was a wagon, so the standard of the tram was the same. Then why should the carriage use such a track standard?

The width of the British road track is four feet and 8.5 inches, so if the wagon is used on other tracks, its wheels will soon crash on the old British path. So where does this cause traces come from?

From the ancient Romans. For the whole of Europe, including the long road of Britain, was paved by the Romans for their armies, and four feet and 8.5 inches was the width of the Roman chariot. The life of any other car on these roads will not be long.

Ask again: Why do the Romans take four feet and 8.5 inches for the track of the chariot? The reason is simple, this is the width of the butt of the two horses that index a chariot.

This is not the end of the story. There are two rocket boosters on both sides of the U.S. space Shuttle fuel tank, as these boosters are built to be transported by train and some tunnels are going to be wider than the train rails, so the width of the rocket booster is determined by the width of the rails.

So the final conclusion is that "path dependence" led to the width of the U.S. Space Shuttle rocket booster, which was determined 2000 years ago by the width of the two horse's buttocks.

Once people have made some kind of judgment, it is like to embark on a path of not return, the power of inertia will make this choice constantly self-reinforcing, and let you easily go out, this phenomenon is called "path dependence".

Span style= "LINE-HEIGHT:25PX; Font-family: the song body; > Bill Gates said: We are looking for a path-dependent opportunity ――Windows< Span style= "color:black; line-height:28px; Font-family: Imitation _gb2312; font-size:14pt; " The high market penetration rate allows us to reduce the cost of choosing the operating system, while also winning a stable monopoly position for Microsoft Corporation.

Similar to the case of the telecommunications industry in the 5G standard dispute, Qualcomm's high royalties licensing, are similar examples.

(RPM) The width of the space shuttle is determined by the horse's butt----criteria determine status