Interventions that should work in theory often do not work in practice.
An explanation of how or why an intervention may work does not mean it does work. For example some farmers in the US used to plant root crops at night as they thought that these crops would only grow if they were planted in the dark.
Even if an intervention works in a way that it is likely to be helpful, it is not possible to predict how beneficial or safe it will be.
BEWARE if a claim about the effects of an intervention is based only on an explanation of how it works.
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