<div id="readability-page-1" class="page"><div id="content" role="main"><a href="https://web.mit.edu/6.001/6.037/sicp.pdf">Structure and Interpretation of Computer Programs</a>에서 문장들을 발췌하여 기록할 것이다. 내가 이 책을 읽는 목적의 51%는 커리어, 49%는 철학에 관한 것으로, 구체적으로는 추상화, 시스템, 컴퓨터과학에 관한 통찰을 얻어가는 것이다. 따라서 내 독서 목적 하에서 인상 깊은 문장들이 발췌될 것이다. 정확히 발췌만 하지는 않고, 내가 속독하기 편하도록 약간의 재배열을 할 수도 있다. 볼드도 추가할 것이다. 책이 두껍고, 내가 바쁘고, 내 관심사도 자주 바뀌기 때문에 언제 독서가 끝날지는 알 수 없다.

오랜만에 전공 서적 읽으려니 재밌기도 하고, 어릴 때 이런 것도 안 읽고 뭐했나 싶기도 하고, 어릴 땐 영어 더 못해서 어차피 못 읽었을 것 같기도 하고 그르넹!

<hr>

2026-08-10 23:42

<h2 id="1-building-abstractions-with-procedures">1 Building Abstractions with Procedures</h2>

The acts of the mind, wherein it exerts its power over simple ideas, are chiefly these three:
<ul>
 <li>Combining several simple ideas into one compound one, and thus all complex ideas are made.</li>
 <li>Bringing two ideas, whether simple or complex, together, and setting them by one another so as to take a view of them at once, without uniting them into one, by which it gets all its ideas of relations.</li>
 <li>Separating them from all other ideas that accompany them in their real existence: this is called abstraction, and thus all its general ideas are made. 
— John Locke, An Essay Concerning Human Understanding (1690)</li>
</ul>

We are about to study the idea of a computational process. Computational processes are abstract beings that inhabit computers. As they evolve, processes manipulate other abstract things called data. The evolution of a process is directed by a pattern of rules called a program. People create programs to direct processes. 
(혼신의 힘을 다해 적은 도입부가 매우 인상적이다.)

… A computational process, in a correctly working computer, executes
programs precisely and accurately. … novice programmers must learn to understand and to anticipate the consequences of their conjuring. …

… Real-world programming, however, requires care, expertise, and wisdom. …

Master software engineers have the ability to organize programs so that they can be reasonably sure that the resulting processes will perform the tasks intended.
<ul>
 <li>They can visualize the behavior of their systems in advance.</li>
 <li>They know how to structure programs so that unanticipated problems do not lead to catastrophic consequences.</li>
 <li>They can debug their programs when problems do arise.</li>
</ul>

Well-designed computational systems, like well-designed automobiles or nuclear reactors, are designed in a modular manner, so that the parts can be constructed, replaced, and debugged separately.

<h2 id="11-the-elements-of-programming">1.1 The Elements of Programming</h2>

A powerful programming language is more than just a means for instructing a computer to perform tasks. The language also serves as a framework within which we organize our ideas about processes. Thus, when we describe a language, we should pay particular attention to the means that the language provides for combining simple ideas to form more complex ideas. Every powerful language has three mechanisms for accomplishing this:
<ul>
 <li>Primitive expressions, which represent the simplest entities the
language is concerned with</li>
 <li>Means of combination, by which compound elements are built
from simpler ones</li>
 <li>Means of abstraction, by which compound elements can be named
and manipulated as units. 
(여기서 1과, 2와, 3 이상인 것의 차이를 느낄 수 있다. 도입부에서 제시한 원자 단위, 복합 단위, 추상 단위가 곧바로 예시로 설명되었고 나에게 인상적이다. 예시가 하나 뿐인데 추상화부터 하는 행동을 더욱 통찰력 있게 비난할 수 있게 되었다. 언어가 관념을 담는 프레임워크라는 말은 프로그래밍의 바깥에서도 생각해볼만 하다.)</li>
</ul>

In programming, we deal with two kinds of elements: procedures and data. (Later we will discover that they are really not so distinct.) Informally, data is “stuff” that we want to manipulate, and procedures are descriptions of the rules for manipulating the data. Thus, any powerful programming language should be able to describe primitive data and primitive procedures and should have methods for combining and abstracting procedures and data.

</div></div>

Wookje blog

Structure and Interpretation of Computer Programs에서 문장들을 발췌하여 기록할 것이다. 내가 이 책을 읽는 목적의 51%는 커리어, 49%는 철학에 관한 것으로, 구체적으로는 추상화, 시스템, 컴퓨터과학에 관한 통찰을 얻어가는 것이다. 따라서 내 독서 목적 하에서 인상 깊은 문장들이 발췌될 것이다. 정확히 발췌만 하지는 않고, 내가 속독하기 편하도록 약간의 재배열을 할 수도 있다. 볼드도 추가할 것이다. 책이 두껍고, 내가 바쁘고, 내 관심사도 자주 바뀌기 때문에 언제 독서가 끝날지는 알 수 없다.
오랜만에 전공 서적 읽으려니 재밌기도 하고, 어릴 때 이런 것도 안 읽고 뭐했나 싶기도 하고, 어릴 땐 영어 더 못해서 어차피 못 읽었을 것 같기도 하고 그르넹!
2026-08-10 23:42
1 Building Abstractions with Procedures
The acts of the mind, wherein it exerts its power over simple ideas, are chiefly these three:
Combining several simple ideas into one compound one, and thus all complex ideas are made.
Bringing two ideas, whether simple or complex, together, and setting them by one another so as to take a view of them at once, without uniting them into one, by which it gets all its ideas of relations.
Separating them from all other ideas that accompany them in their real existence: this is called abstraction, and thus all its general ideas are made.
An Essay Concerning Human Understanding (1690)
We are about to study the idea of a computational process. Computational processes are abstract beings that inhabit computers. As they evolve, processes manipulate other abstract things called data. The evolution of a process is directed by a pattern of rules called a program. People create programs to direct processes.
… A computational process, in a correctly working computer, executes
programs precisely and accurately. … novice programmers must learn to understand and to anticipate the consequences of their conjuring. …
… Real-world programming, however, requires care, expertise, and wisdom. …
Master software engineers have the ability to organize programs so that they can be reasonably sure that the resulting processes will perform the tasks intended.
They can visualize the behavior of their systems in advance.
They know how to structure programs so that unanticipated problems do not lead to catastrophic consequences.
They can debug their programs when problems do arise.
Well-designed computational systems, like well-designed automobiles or nuclear reactors, are designed in a modular manner, so that the parts can be constructed, replaced, and debugged separately.
1.1 The Elements of Programming
A powerful programming language is more than just a means for instructing a computer to perform tasks. The language also serves as a framework within which we organize our ideas about processes. Thus, when we describe a language, we should pay particular attention to the means that the language provides for combining simple ideas to form more complex ideas. Every powerful language has three mechanisms for accomplishing this:
Primitive expressions, which represent the simplest entities the
language is concerned with
Means of combination, by which compound elements are built
from simpler ones
Means of abstraction, by which compound elements can be named
and manipulated as units.
In programming, we deal with two kinds of elements: procedures and data. (Later we will discover that they are really not so distinct.) Informally, data is “stuff” that we want to manipulate, and procedures are descriptions of the rules for manipulating the data. Thus, any powerful programming language should be able to describe primitive data and primitive procedures and should have methods for combining and abstracting procedures and data.

추상화

댓글