if to ask.

 

why not directly drop segments of a skyscraper

 

and weld underwater.

 

 

too many unpredictable elements.

 

shapes and design gets in way.

 

 

and too slow, if to be built in volume.

 

 

if an entire area hollowed out,

 

 

easy to build city within those conditions.........

 

 

but probably technical feasibility is somewhat abysmal.......

 

 

no. possible but,

 

 

adjustment required.............