/sci/ - Science & Math

https://spacenews.com/msr-highlights-challenges-of-nasa-flagship-missions/
>MSR, though, is just the latest in a series of ambitious NASA science missions that have suffered delays and overruns, such as the James Webb Space Telescope (JWST). “NASA struggles to develop complete, credible and transparent estimates” for such missions, said George Scott, the agency’s acting inspector general. That is linked at least in part to a “culture of optimism” that causes it to underestimate the challenges such missions face.