I think the numbers are just shorthand for descriptors and they really should mean something.
For instance a Dextrous character might move with fluidity, skipping through a crowd like a bird, whereas a low dex character, might stumble through, being pushed and maneuvered around as the crowd moves.
A high strength character might plough through the crowd, pushing people and obstacles aside as the move steadily towards their destination. A low strength character would find themselves at the mercy of the crowd, unable to get through the churn of bodies without aid.
A High Wisdom character might look about, alert to the motions of the crowd around them, seeking out gaps and openings to move through as they occur. A low wisdom character looks at the crowd with alarm, unsure of how to get through.
I like to think about what adjectives and verbs might fit with each Attribute and how they can inform the RP