For example, if our app uses a letter-spacing of 1.2 for all the body text, and your Figma design uses a letter-spacing of 1.25, is that important? Or is that a mistake?
In something like Figma, being consistent is difficult for designers. But in code, being consistent is the default — exceptions are hard for developers!
There's a fundamental mismatch that just ends up being painful all around.
"The map is not the territory." Trying to get a design doc to 100% accuracy is often a waste of time. Design tools need a way to specify which details are important, and which are not.