I'm not sure if this is intended as a joke or not. " Astronomers are very cost-conscious," Have you paid any attention to cost over-runs on TMT or Webb? Can

I'm not sure if this is intended as a joke or not. " Astronomers are very cost-conscious," Have you paid any attention to cost over-runs on TMT or Webb? Can you give me an example if a larger $100M+ project done on a payment on delivery / fee for service model in astronomy in last decade? I'm seriously interested.