種子論起點 4
這段改編自 2010 年 3 月 20 日的對話。
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其實不只是「尋找戀愛對象」，其他事情都，時常有這個現象。例如，要尋找志同道合的朋友，都是不能刻意地「尋找」，只能無意中「發現」，簡稱「可遇不可求」。
我和你是大概十年前，工程系的同學。但是，在大學那三年中，我同你只有間中聊天，並沒有詳細對話。到我們雙方都發現，原來對方都對「哲理」話題，很有興趣時，就已經是畢了業，數年後的事。
— Me@2012.01.10
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2012.01.10 Tuesday (c) All rights reserved by ACHK
Dear Deepak, because the geometry simply cannot work in the same way for sub-Planckian ultrashort distances – the usual notions of geometry break down, the quantum fluctuations of proper lengths are of order 100%, the topology of spacetime is spontaneously changing over there (quantum foam), etc. The spacetime with gravity can’t be the same or self-similar at/beneath the Planck scale. Even wrong theories of quantum gravity such as loop quantum gravity clearly imply this – in the LQG case, the proper areas can’t be nonzero but much smaller than the Planck area (quantization). Think about it. – Lubos Motl Mar 24 ’11 at 5:36
2012.01.10 Tuesday ACHK
Physics Town 