I agree that there is an intuitive concept of "explainability", which is why I said that a formal model for it would be interesting to see. I also agree that "t

I agree that there is an intuitive concept of "explainability", which is why I said that a formal model for it would be interesting to see. I also agree that "the average explainability of a deep net is lower than the average explainability of a linear model" (whatever that sentence means), my point is that it's extremely hard to pinpoint what explainability means, because the usual characterization of "you can fit the model in your head" is extremely subjective and brittle. I'm all for more research in this field. Heck, I'm all for more research in any field, but because our definition of "explainability" is so primitive and unrefined, arguing that we should build ethical or regulatory frameworks on top of it seems premature.