A lot of the time you're not actually using what is passed to the function, but ...

csimon80 10 months ago | parent | context | favorite | on: Array Languages: R vs. APL (2023)

A lot of the time you're not actually using what is passed to the function, but instead the name of the argument passed to the function (f(x), instead of f('x')). Which, helps the user with their query (dplyr) or configuration (ggplot2).