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This is a TEST rocket program.
The goal of the program is to figure out what does and doesn't work.
There are numerous ~~zero~~ single failure points all over the ship currently as they figure things out.
Using the concrete was a way to test if they could set up a launch pad easier. ALL their tests and modeling proved it should work.
Tests and modeling aren't the end all be all though and sometimes things you don't or can't anticipate happen and then you remodel with the new info. This isn't a high school project, it's rocket science.
There was nothing bullshit about testing it out.
The goal of IFT1 was don't blow up the entire stage 0. They didn't blow up the entire stage 0. They learned the concrete doesn't work, but also hopefully they were able to learn WHY. And if they found a why that why may lead to it being attempted again in the future maybe even by someone else.
You’re not an engineer, are you?
No, I'm not an engineer (and that's an Ad Hominem fallacy). But for the love of god, SpaceX is a terrible company because they launched a rocket with INTENTIONALLY missing heat shield points to see what would happen (edit: all while knowing if certain heat shield tiles failed it would guarantee the complete destruction of the ship, that would obliterate any crew you're oh so concerned about in this test phase!), and even launched their rocket with wing flaps that they suspected would be destroyed by the hot plasma and had already made changes in future designs! God forbid they test a ablative concrete launch pad that survived all their real world tests and showed it should work in models.
You’ve just explained why we’re pissed at them and not even realized it.
And you've just explained how you have absolutely no understanding of how spacex functions and why and why it's a good thing.
This is how they land rockets on barges at sea and no one else can, or thought it was even possible.