goldsmith declared that the trip to mars was not simply an exercise in intellectual curiosity and that it had positive externalities. I challenged him for examples of externalities I could expect to enjoy from this trip. He responded with the aforementioned list. And I proceeded to ask for clarification as to how each of the items benefitted me (or anybody), because it was not, and still is not, readily apparent.
This is where you jump in with your big fat wrong assumption.