2 ms·

They are single points of failure.

• bmitc 5y ago
  That's not much of an elaboration. Further, I am doubtful, because something always goes wrong. So if a project that has seen decades of delays and billions of dollars of budget overruns has suddenly invented engineering and processes that yields zero failures, count me surprised. I just wish there was more elaboration of things they are able to accommodate for as things inevitably pop up and not this hyper focus on a number of supposed single point failures.