Today my younger brother and I, while discussing the idea of building any commercial building (something like a hotel) in the Earth orbit, got into some debate with the assembling of the building in space.
I believe it won't be possible to build any building or any craft in space without physical presence of any human in space but he thinks otherwise, says that it's completely possible with humans controlling things right from Earth. But I think a physical presence is very much necessary to ensure everything goes right and even fix problems from there only when needed.
What would be the challenges to constructing a "building" in Earth orbit (something like a hotel) 100% robotically, without any local human supervision, i.e. nobody up there in orbit to keep an eye on things or fix things when they break?