Economics is a branch of social science . It is testable , and economic theories are also subject to peerreview . I say this with zero snark or disrespect You are not the person to be making judgement values on a discipline that you have less than zero understanding of . Excluding the Kim dynasty of North Korea , I challenge you to find one single reputable economist who genuinely thinks the UK can be 100 % self sufficient while still having an economy similar in scale to what it is now . I mean , that doesn ' t even make any sense on the face of it . We don ' t even have enough farmland to sustain our current food intake as it is . <| sep |> So 1 am Saturday or 1 am Sunday ? Like , if I got there before midnight , what day would I be there ?