l*******5
发帖数: 2 | 1 【 以下文字转载自 Mathematics 讨论区 】
发信人: lala12345 (lala12345), 信区: Mathematics
标 题: 问个数学问题
发信站: BBS 未名空间站 (Fri Dec 5 16:13:21 2008)
Suppose you are a hiker in a mountainous terrain, the mountains being quite
pronounced but smooth, not craggy.
You look for a place to pitch a tent for the night. Now, one can have
torrential rains during the night and then the water assembles into brooks
and streams. Putting a tent where a stream will assemble can be deadly as
you can be washed out and killed.
So you wo |
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