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That's certainly part of it, yes. But I think much more importantly, dreaming big is a muscle. You have to exercise it from time to time. Each time I come up with a grand vision and sink dozens to hundreds of hours into it, only to walk away unfinished, I learn a bit more about how to make a dream become real.
Nasa says the earliest the rocket can blast off is 6 February, but there are also more launch windows later that month, as well as in March and April.