Tuesday, November 29, 2011

Human's limitations

Although humans can do many things, there are things that humans are not able to do. There are limitations to human’s abilities. For example:
  • we can memorise a telephone number but it is difficult for us to memorise 20 telephone numbers without writing them down.
  • we can try to jump as high as possible but it is difficult for us to touch the ceiling.
  • we can read the writing on this page easily from a near distance but we can not read the writing from a far distance, for example, 20 m.
  • we can hear a sound from a short distance but we will not be able to hear a sound from a very long distance, for example, 500 m.

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