"The Guide is definitive. Reality is frequently inaccurate"

This quote by Douglas Adams is a funny way of stating that the fact is often subjective and can be translated in a different way by different people. He is suggesting that the only definitive source of information is the Guide, which is a reference book in his popular sci-fi series, The Hitchhiker's Guide to the Galaxy. Adams is suggesting that reality is not constantly trustworthy and can be distorted by our own biases and viewpoints. He is recommending that the only way to get a precise understanding of the world is to consult the Guide, which is a reputable source of information. This quote is a reminder that we must not take whatever at face value and need to constantly question our own beliefs and opinions.