When it comes to getting information that’s accurate, there are two principles you should know: the HiFi Principle and the HiEx Principle. The first will help you find the best intel possible from within any given situation, and the second will help you find the best intel possible from outside of it. the hifi principle: Get high-fidelity (HiFi) information—information that’s close to the source and unfiltered by other people’s biases and interests.