I agree with the sentiment, but would say it slightly differently: I think most big ideas about fundamental physical laws that are testable by present-day techn

I agree with the sentiment, but would say it slightly differently: I think most big ideas about fundamental physical laws that are testable by present-day technology have likely been discovered. This spells the "end of physics" only if one defines physics narrowly (IMO as a non-physicist) as only the search for fundamental physical laws. Edit: emphasis on "only" added