I have a question for those who understand this better than me. How do you tell the difference between "Moving fast and allowing failure lets you learn faster" break into "We've hit a roadblock and now we're just wasting money". It seems like they're getting close but of course the last 10% is much harder than the first 90%. Like they don't have the money for 100 more learning flights right? I suppose only they have the answer to this question, but less things failed this time than last time would be a decent metric.