The author seems way too focused on the exact meaning of "expert" without thinking about what they actually need from a subject matter expert for a specific hea

The author seems way too focused on the exact meaning of "expert" without thinking about what they actually need from a subject matter expert for a specific hearing. Who you need for an ethics hearing will likely be different than who you need for a political hearing even though they are both "experts". A subject matter expert before a political hearing needs to understand the societal and financial decisions of a class of technology and be able to explain it in a way that others can understand. Pretty much any tech leader should be able to do this. A major issue with this is that politics in the US (and plenty of other countries) are so driven by money that you end up with a bunch of politicians that are willfully ignorant of the sectors they are supposed to legislate for because they are paid to just do what the people with the money want you to do.