1960年，John McCarthy发表了一篇论文，展示了如何用少量简单操作构建完整的编程语言。
Lisp的核心理念是：用列表（list）同时表示代码和数据。这被称为"同像性"（homoiconicity）。
有两种清晰的编程模型：C模型和Lisp模型。C模型关注内存布局和性能，Lisp模型关注表达能力和抽象。
新语言正稳步向Lisp模型移动：运行时类型、垃圾回收、闭包、元编程——这些曾经是Lisp独有的特性，现在已经成为主流。
Lisp可以写自己。这是Lisp的标志性特征：用Lisp写的Lisp解释器只有几页代码。
McCarthy的论文不仅是技术文档，更是关于如何设计优雅系统的案例研究。
In 1960, John McCarthy published a paper showing how to build a complete programming language from a handful of simple operators.
The core idea of Lisp: using lists to represent both code and data. This is called "homoiconicity."
There are two clear programming models: the C model and the Lisp model. The C model focuses on memory layout and performance; the Lisp model focuses on expressiveness and abstraction.
New languages are steadily moving toward the Lisp model: runtime typing, garbage collection, closures, metaprogramming—these were once unique to Lisp but are now mainstream.
Lisp can write itself. This is Lisp's signature feature: a Lisp interpreter written in Lisp is only a few pages of code.
McCarthy's paper is not just a technical document, but a case study in how to design elegant systems.
核心洞察：
这篇文章是技术性的，但核心思想很清晰：Lisp的优雅在于它的简洁性和自举能力。
最有力的段落：
"He showed how, given a handful of simple operators and a notation for functions, you can build a whole programming language."
（他展示了如何仅凭少量简单操作和函数表示法，就能构建完整的编程语言。）
"A popular recipe for new programming languages in the past 20 years has been to take the C model of computing and add to it, piecemeal, parts taken from the Lisp model."
（过去20年新编程语言的流行配方是：采用C的计算模型，然后逐步添加从Lisp模型借鉴的部件。）
个人反思：
这也解释了为什么PG如此推崇Lisp——它代表了编程语言设计的理想形态。对于投资者来说，理解这些技术演进的底层逻辑，有助于判断哪些技术有长期价值。