To build a folly is essentially to do something a second time, something at an inopportune moment. That something is always the memory of something forgotten, about which we can paradoxically say "There it is again."
Follies were misunderstood, purposeless constructions. They were often only small, extravagant gestures in a garden, easily whisking off the imagination to distant lands, a sort of time capsule built to awaken the memory and induce surprise in passers-by. They marked locations, organized secondary paths in a park, or simply predicted the arrival of better times—a demarcation, a sacred spot, a mysterious trail, a hill whose tragic rocky nature begged for a tower, a party, or the arrival of summer.
“It is demonstrably true that things cannot be other than as they are. For, everything having been made for a purpose, everything is necessarily for the best purpose.” — Professor Pangloss
Domain specific UX means understanding how the supply should fit the demand considering a specific situation and use case.
On the other hand, many aspects of UX don’t require knowledge about a particular situation. They‘re based on the common constraints of human sense faculties, memory and cognition or the net of ergonomic factors around the device and the setting where it’s used. These domain independent elements of the UX are important too.
Domain independent UX should absolutely pervade the organization. It belongs to the general skill and knowledge of each supplier at their link in the chain. It’s part of learning to be a good designer, programmer, marketer, salesperson etc.