Trust in science is a weakness of those who have not studied the
natural sciences. Scientific knowledge is always provisional and open to
revision in the light of new observations and reinterpretation of old
ones.
The scientific community has been insufficiently clear on
this point of late. The result has been that, based on the science
available at the time, advice has led to harmful public policies and
recommendations in many fields eg dietary advice, energy, medicine,
agriculture; some of those policies have subsequently been reversed.
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