I bet there are tons of things in every industry that are "widely" known that you've never heard. I bet this is true of your industry. Why would I make that bet

I bet there are tons of things in every industry that are "widely" known that you've never heard. I bet this is true of your industry. Why would I make that bet? Because it's extremely unlikely that you know everything, and I will take that bet for any person in any industry about any industry. I'm certain your ignorance is a sign of something suspicious - just not about this topic.