解析彩虹 Day 5
彩虹真是贯穿全文，从牛顿的解析彩虹，扩展到解析光波，再解析声波。
今天从书中了解到，通过傅立叶分析的方法，统计古生物学家提取出了地球上物种大灭绝的周期大约是2600万年，并且进一步推论出引起这样长的灭绝节奏的，可能是一颗未知天体的周期运行。
真的是无法想象，身边的一些小小的现象，竟可以总结成为规律，并运用数学运算等方法，推导出更美妙的可能性。
太令我震惊了！
将杂乱的波形分解成正弦波，然后又能将其重新组合为原始的曲折线，这种数学方法被称为傅立叶分析，得名于19世纪法国数学家约瑟夫·傅立叶（Joseph Fourier）。
傅立叶分析不仅适用于分解声波（事实上，傅立叶本人发明这项技术就是为了其他目的），还适用于分析其他任何有周期性的变化，分析对象并不需要是声音那样的高频波，或者光那样的超高频波。我们可以认为：傅立叶分析作为一种数学手段，可以相当方便地解析那些比光慢得多的振动波谱所构成的“彩虹”。
就如同夫琅禾费谱线穿过遥远的宇宙空间，传来宇宙的信号，让我们视通亿兆；红杉的年轮穿过了悠悠岁月，传递给我们古老时代的消息，让我们思接千载。这又是一种灵巧的秩序。事实上，精确分析这些看起来微不足道的信息，我们可以知晓如此丰富的东西，正是这种能力，让这些解析变得这样美丽。同样，我们的谈话和音乐的声波（空中的条形码）也具有美丽的内涵，也许甚至更加具有戏剧性。
DNA这章中，道金斯提到解析DNA，强调其中重要的是表面之下的概率论与统计学；我们应该学会的是进行科学推理的方法。还未阅读完，很想在这章努力地去体会下，什么是进行科学推理的方法。
My Brilliant Friend Day 2
Lila也让我想起了我曾经的那个“Lila”，她就像个黑洞，每个经过她身边的人，都会被不自觉地吸引进去，无法自拔。
很喜欢下面两段细腻的描写，也把我拽回了记忆中的那些时刻。
不知道是否每个女生都曾经历类似的这些感受？我也曾把“Lila”的所有事情都看得比我自己还重要，也暗暗决定要永远待在她的身边。
What that demotion caused inside me I don’t know, I find it difficult to say, today, faithfully and clearly what I felt.
Perhaps nothing at first, some jealousy, like everyone else.
But surely it was then that a worry began to take shape. I thought that, although my legs functioned perfectly well, I ran the constant risk of becoming crippled.
I woke with that idea in my head and I got out of bed right away to see if my legs still worked.
Maybe that’s why I became focused on Lila, who had slender, agile legs, and was always moving them, kicking even when she was sitting next to the teacher, so that the teacher became irritated and soon sent her back to her desk.
Something convinced me, then, that if I kept up with her, at her pace, my mother’s limp, which had entered into my brain and wouldn’t come out, would stop threatening me.
I decided that I had to model myself on that girl, never let her out of my sight, even if she got annoyed and chased me away.
I suppose that that was my way of reacting to envy, and hatred, and of suffocating them.
Or maybe I disguised in that manner the sense of subordination, the fascination I felt.
Certainly I trained myself to accept readily Lila’s superiority in everything, and even her oppressions.
