It means that even a small mistake or failure is just as bad as a major one. It emphasizes that even a small deviation from the intended course can have significant consequences.
Here's a breakdown of the proverb:
* "A miss" refers to a mistake or failure.
* "As good as a mile" means that the mistake is just as bad as a significant error or deviation.
Examples:
* In a game of darts, even missing the bullseye by a small margin is considered a miss, and is just as bad as missing the board entirely.
* In a business negotiation, even a small miscommunication can lead to a major misunderstanding and a failed deal.
The proverb is often used to emphasize the importance of precision and accuracy, even in small things. It serves as a reminder that even seemingly insignificant mistakes can have far-reaching consequences.