Sorry all - i have a power supply issue or something yesterday with my PC, should be rectified within 4 to 10 days so decided to upload this from laptop, which is extremely tedious ....
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https://www.youtube.com/watch?v=gdQzRL7WMe4
How to construct an absolutely level megastructure floor by floor by using only 3 mold casts INCLUDING FOR THE OUTER SECTIONS, with interconecting waffle style precast mega blocks
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https://www.youtube.com/watch?v=FlL4UIQnaJs
even the most advanced & organised of this era (((HUMAN ERA))).
copied pre-world sites the best they could.
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https://www.youtube.com/watch?v=PiaIvGVCA98