Many GP tools are self explanatory, but many can be challenging to decipher during discovery learning. The doc is necessarily ambiguous-enough to address any user application, but such broad language can be difficult for users to understand the intended workflow and whether it applies to their use case.
I recommend the help (?) pop-up for each GP tool (and/or other ArcGIS features) include a link to a brief video which demonstrates an example use case. 3-5 minutes, no more than 10, much like ArcGIS Solutions videos except perhaps further condensed to just the demo.
