They used this tech on the great wall.
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"least strong"? lolol
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"Sand is one of the least strong materials since it only relies on internal friction for support. YouTuber Practical Engineering found that using even little reinforcements can strengthen sand." Who do you have writing this stuff? 5 year olds? "using even little"!?! *facepalm
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Oh, how I love science. Especially the everyday here it is in your backyard science.
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You say it defies physics, and then go on to describe the physics of it.
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