**Going on a long winding path**

Since men can visualize two-dimensional surfaces in three-dimensional space, they use them to illustrate the topology of spaces of higher dimension. Deviations from the simplest topology are called the distortions of space. The sheet, depicted on the image below, is different from a simple bent sheet in terms of the presence of the connection to the left — of the neck, over surface of which the ant could move from the upper part of the sheet to the lower much more rapid than traveling through the right side of the sheet. The three-dimensional space in the four-dimensional space-time can also have similar “short cuts”.

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