Nobody will take that contract. Any mistake in the government specifying what they want you to build can be politically manipulated into a legal matter with some probability you'll end up in prison.
Not at all: any mistake in the government specifications is the government's problem. If you have requirements and a requirement tracing matrix to deliverables and you deliver what is required, you are good.
But usually in most parts of the world these government contracts are intentionally made ambiguous for so many reasons including corruption and incompetence of the people writing requirements.
