If it is a principle, it is this: "we should resist radical change when it is likely to produce bad consequences or unlikely to produce catastrophic ones, and we should embrace it when the reverse is true". That's just basic decision theory which everyone agrees on.
But for modern conservative theory the 'embrace it' doesn't factor in. They NEVER like rapid change. In fact a good argument can be made that conservatives did not like rapid industrialization and would have prefered a slower change, where instead the liberals who were in control at the time were pushing for the change.
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