Simple mechanical example: adjusting idle screws on a carbureted engine. If you know what they are, then it's a simple change that is easily un-doable.
But if you open a car's hood without understanding which screw does what, you'll notice maybe a hundred screws that each might do anything. Screwing or unscrewing any particular one could mess up your whole engine block.
This is the fear I feel about using the Kernel.