After these many years, shuld I forget the question ----

--- "how will you keep out the rain"
--- " How do you calculate the forces in a so complex structure "
Reson I ask, is this ;
Now if that is "possible" what was it that "worked" against 3D-H ,when such much more complex structure also allow the rain to enter ; from my oppinion any of these arguments would be answered there.
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