One issue is that people will often try to define things in terms they (think they) understand rather than taking a step back and trying to evaluate whether they are missing some key information (in their "known unknowns" or "unknown unknowns" zones) that may explain things better.
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I've always viewed CSS as the language to create rule sets for a domain specific rules engine.
CSS Selectors define the conditions when the rule applies.
CSS Declarations define the actions to take when the conditions match.
Specificity and source order govern rule priority.
RulesEngine
One issue is that people will often try to define things in terms they (think they) understand rather than taking a step back and trying to evaluate whether they are missing some key information (in their "known unknowns" or "unknown unknowns" zones) that may explain things better.