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Elon Musk on reusable heat shields and Mars reentry:
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Elon Musk on reusable heat shields and Mars reentry:
— No one has created a truly reusable orbital heat shield before
— Reentry involves extreme heat and pressure — very hard to withstand
— Only advanced ceramics and carbon-based materials can survive it
— SpaceX aims to make
btc
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twitter.com)
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“Socialism works—until trust runs out.”
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“Socialism works—until trust runs out.”
A shop in China tried an honour system:
Take a drink, pay voluntarily.
Out of 40 drinks taken, only 8 were paid for.
No police.
No cashier.
Just expectations.
Systems built on collective morality don’t collapse overnight —
they erode
时政
(
twitter.com)
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