Summary

Dijkstra's central thesis is that the unrestricted use of the `GOTO` statement in programming is a primary cause of incomprehensible and error-prone code. He argues that `GOTO` disrupts the logical flow of a program, making it difficult to reason about its state at any given point. This difficulty, he contends, directly leads to an increase in bugs and a decrease in programmer productivity.

The essay highlights the importance of structured programming, where control flow is managed through constructs like loops and conditional statements, creating clear, predictable execution paths. By avoiding `GOTO`, programmers can write programs that are easier to understand, debug, and maintain. The takeaway is that disciplined control flow is essential for writing robust and reliable software.

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Key concepts

`GOTO` statement — A programming language command that transfers program control to a specified line number or label, regardless of the normal sequential execution.
Structured programming — A programming paradigm that emphasizes the use of control flow statements like `IF-THEN-ELSE`, `WHILE` loops, and `FOR` loops, avoiding unstructured jumps.
Program clarity — The degree to which the logic and execution flow of a program are easy for a human to understand.
Debugging — The process of identifying and removing errors (bugs) from computer programs.