Architecture is very much about culture. I'm not sure I'd call it a social science, but the science part of architecture - making sure that buildings don't fall down - is left to structural engineers.

If you read how architects justify their designs, they're full of references to culture, philosophy, and occasionally - too rarely - practical research into how people move through and live/work in spaces.

It's a social activity in that architects design for other architects. Clients are secondary.

CS is actually no different, it's just far less culturally self-aware. There's nothing objective about CS. It grew out of a specific philosophical current, and it could easily have gone in other directions, emphasising other kinds of entity relationships - e.g. less atomised and sequential, more contextual and associative. That in turn would have influenced the design of the hardware.