Retell Lecture

You will hear a lecture. After listening to the lecture, in 10 seconds, please speak into the microphone and retell what you have just heard from the lecture in your own words. You will have 40 seconds to give your response.

Infinite Monkey Theory(猴子打字理论)

Updated at: 2018-11-24 新题 预测 机经题

The infinite monkey theorem states that a monkey hitting keys at random on a typewriter keyboard for an infinite amount of time will almost surely type a given text, such as the complete works of William Shakespeare. In this context, "almost surely" is a mathematical term with a precise meaning, and the "monkey" isn't an actual monkey, but a metaphor for an abstract device that produces a random sequence of letters ad infinitum. The theorem illustrates the perils of reasoning about infinity by imagining a vast but finite number, and vice versa. The probability of a monkey exactly typing a complete work such as Shakespeare's Hamlet is so tiny that the chance of it occurring during a period of time of the order of the age of the universe is minuscule, but not zero.

But technologies can help monkeys to write. If the monkeys are given a pen and some papers to spell the word monkey, they can only scratch on the paper. By contrast, if they are given a typewriter, it will take them over 10 years to produce the right spelling. However, if they can use computer programing, they can finish the task within a day.