It’s not going to do any good to land on Mars if we are stupid.
It’s not going to do any good if we change jobs without changing ourselves. It’s not going to do any good if we win the lottery if we are stupid about it, because we might end up in more debt than we ever had before. Getting somewhere is completely pointless if we are not the kind of person who can make anything good grow out of it. Bradbury put this truth into surprisingly blunt words. That is why the process takes time: not because of the distance covered but because of the transformation we go through.