Why do soldiers still learn to march even though that it’s not practical in actual combat?
Because you still need to be able to move large bodies of troops quickly and efficiently:
Try moving a bunch of civilians from point A to point B some time. People will dawdle, wander off, get lost, etc.
It'll take ages and they'll need herding and lots of shouting. I'm constantly amazed what a shit show getting 50 civilians to move even 100m can be.
If you've got a body of military personnel a single leader can move hundreds of people any distance you like quickly and easily.
The military need to do this all the time. It's actually by far the most useful thing you learn drill for.
It may not be used in battle, but it's a super practical military skill. No. NASA and the military are SpaceXs biggest customers.
It's been NASA and military launch contracts which built SpaceX into what it is today. Without those contacts SpaceX world have failed years ago.
NASA are not a competitor to SpaceX, they're a partner and customer. NASA' don't build rockets, they purchase them from companies like SpaceX and ULA.
NASA aren't embarrassed by SpaceX, they're very happy with it. NASA’s support of and investment in SpaceX has really, really paid off.
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