Post #2093824

@kerfuffle @moreentropy Last time I did a full waterfall project it was for ESA (30 years ago) - we were launching the thing with no opportunity to update the inflight stuff and a very short lifespan of the mission (limited by cryogenics). Accompanied by inflexible budgetary politics. Waterfall made a lot of sense at that point. Oh and did I mention that the launch window was determined by planetary locations? All the _hard_ constraints.