Imagine someone has a question about physics, say “How can I figure out the acceleration due to gravity?”
A physicist answers with “You can throw a bowling ball from various floors of a multistorey building.” The physicist knows in their head the experiment they would perform. It’s so obvious to them that they skim over the details and say what they see to be the key points, and assume that the person asking will figure the rest out.
The problem with this is that a non-physicist has asked the question, and they don’t know the details that the physicist skimmed …