Publish and make publicly available the scientific advice and evidence that informs policy decisions. This would mean these were available for challenge and peer review.
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The Government's Covid-19 Policy Responses are a prime example of the problem. Health and social care policies such as this affect everyone, and evidence continues to emerge which brings huge question and doubt as to whether the science-informed, science-led policies are empirically correct. Society is not a testing ground for theories. Science-informed policies need to be based upon scientific fact and peer-reviewed consensus.