A torque wrench is safer because it's designed to disconnect the applied force at the chosen setting.
Nope, a torque wrench is designed to indicate, by various means, when the set torque has been reached, that's all, there are only a couple of ways the applied force is disconnected, or released.
One is when the operator releases the force in a controlled and safe manner.
The second is when through tool malfunction, fastener breakage etc, or the wrench was designed to disconnect, ( but these wrenches don't exist ) the applied force.
Disconnecting the force in any of these ways would have potentially damaging consequences to the operator and whatever he is working on.
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Common sense isn't a gift, it's a punishment because you have to deal with everyone who doesn't have it. 
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