Back in 1997-2000 when studying electronic engineering, I learn about the halving principle which was/is used to locate failures in electronic circuits.
This approach/principle has later shown to be very useful when running projects and analyzing business/processes.
But it is also very useful for commercial processes, digital funnels, screening processes, investments and much more, because more or less everything you do are work is or can be seen as a process.
Overall, the idea is quite simple; Map the process · split in 50/50 · measure · repeat The great indirect thing is, that the principle will force you to map the end2end process/workflow which immediately will give you a better understanding.