"It is easier to write an incorrect program than understand a correct one"

This quote by Alan Perlis talks to the problem of understanding a program that is currently composed, instead of writing a program from scratch. Writing a program needs creativity and problem-solving abilities, however comprehending a program needs a deep understanding of the code and the logic behind it. It is often much easier to compose a program that is incorrect than to understand a program that is right, as the former requires less effort and understanding.

This quote also talks to the importance of composing code that is well-structured and easy to comprehend. Composing code that is tough to understand can result in mistakes and bugs, as it is harder to debug and keep. Writing code that is easy to comprehend and debug can conserve effort and time in the long run, as it is simpler to determine and repair errors.

In general, this quote by Alan Perlis highlights the importance of composing code that is simple to understand and debug. Composing code that is hard to comprehend can cause errors and bugs, and can be more time-consuming to debug and preserve. Writing code that is easy to understand can conserve time and effort in the long run, and can help make sure that the program is appropriate and bug-free.