The type of insane some wouldn't doubt to hop into the ride with, at least

Point 5) ringed bells on instancing wen building virtual built environments (3d computer graphics): you present to the user the projection (child) of the object (parent) on its needed version. At backstage the builder edits the object matter as necessary and pulls the projection however it's needed, that way you don't duplicate object's matter but its script only...

About point 2), which BDD it'd be of these?