I don't disagree with you Chalala and Lurked, and I'm also not suggesting that we should use 'gut feeling' to make decisions. What I am suggesting is this: take, for example, the LSE study. The results are correct as they stand within certain parameters, the parameters being hypothesis testing, observations and recording of data, referring to the dependent and independent variables. Once these things have been decided, the study is correct, objective and rigorous as it stands. However, it's the parameters themselves, the stage before the study actually commences, which are infused with political processes (how your dependent and independent variables are defined, how you define and word your hypotheses and research aims, how you define which cases to include and which to exclude from your observations, what you count as present or absent). So, deciding how you define a migrant, the concept of social cohesion, income, spending, service usage, infrastructure, etc. are all political decisions. The science may be accurate but how we got to that point isn't. This is why many organisations get things wrong an awful lot of the time. For example, this is from an article (obviously presenting a particular perspective):
"It does not take a particularly long memory to recall how, little more than a decade ago, the CBI insisted we had ‘no alternative’ but to abandon the pound and join the euro [...] Yet the CBI, under the director-generalship of Adair Turner, disapproved even of the then Labour government’s policy of subjecting the issue to economic tests.In 2002, on behalf of his members, Turner declared: ‘There is no case in favour of wait and see . . . to stay out now would be a terrible mistake.’ Britain would be ‘missing out on the great restructuring of the European economy [...] Conservative MEP Daniel Hannan has pointed out: 'The CBI, in its various incarnations, has managed to get practically every big call wrong'. ‘In the Twenties, it wanted to go back to gold at the pre-war rate. In the Thirties, it was for appeasement. In the Forties, it was often for nationalisation. ‘In the Fifties, it was for state planning. In the Sixties, it was for tripartite industrial relations. In the Seventies, it was for price controls. In the Eighties, it was for [British membership of] the Exchange Rate Mechanism. In the Nineties, it was for the euro. Now its leaders trot out precisely the same line in favour of EU membership"
I think that one reason why big organisations are often wrong (and there are plenty of examples of this) is because they fail to account for the political processes underpinning their research. I am not suggesting that we make decisions on the basis of gut feeling. I am suggesting that organisations make their self-interest fully available when producing knowledge. In the absence of this, however, the public must seek out these processes for themselves, which is what everyone is doing here. And sometimes, gut feeling (not ideal) is all we have left when the self-interest are not declared or not forthcoming. Given what I've said above, which 'side' do you suggest people believe? From a personal perspective, given that neither side is able to produce factual and objective information, things like the ability to vote representatives in or out becomes important as do several other points, which are incontrovertible.