IFP @_brianpotter explains why factories full of expensive machinery still struggle to build houses cheaper than workers using basic hand tools: "You can, and plenty of people do. What you can’t do is make prefab cheaper and better enough than conventional construction that it becomes the new default." "Construction is simple enough that you don’t need a bunch of big, expensive equipment to do it. People can stitch a house together with basically hand tools. So it is hard for a factory that…