To whomever downvoted parent: please don't act against people brave enough to state that they don't know something.
This is a desired quality, increasingly less present in IT work environments. People afraid of being shamed for stating knowledge gaps are not the folks you want to work with.
I feel like there's a minimum "due diligence" bar to meet though before asking, otherwise it comes across as "I'm too lazy to google the reference and connect the dots myself, but can someone just go ahead and distill a nice summary for me"
In this particular case, I was out of the loop regarding the clever analogy myself. I'm now a tad smarter because someone else expressed lack of understanding, and I learned from responses to this (grayed due to downvotes) comment.
