For several times the launch of the James Webb Space Telescope, Hubble's successor, had been postponed and is now forseen to happen in 2021. Obviously the engineers need this time to make sure everything works as it should and the primary mirror and truss structure holding the secondary mirror unfold (- to what sigma certainty are they probably required to "guarantee" that what they send up will work ??? Any insights here as to what's the rule in space flight? The more expensive the more sigma?)
Anyway, as the JWST has now eaten roughly around almost 9 billion $ over the length of the entire project there is surely a huge pressure on NASA to make sure that it works.
Now my big question:
What if anything goes wrong leaving the spacecraft in a state not able to conduct useful science, e.g. if the truss structure does not unfold as planned? What hellish fanfares will hail down from Concress and sponsors?
How might the NASA and it's science program look like if the 9-billion-$ JWST mission was in vain besides the technological research conducted?