That changed a lot when the heat of fire was used for boiling water into steam to drive industry, which became large scale and controlled by a few people with countless labourers and employees, whose smaller scale business had come to be totally outcompeted and had no choice but to accept the working conditions that suited these new tycoons.

FORBES: Cold Fusion and Unintended Consequences

Chris Aram has designed a gadget that automates the boiling process on stovetops, ensuring pots never boil dry or catch fire.

CNN: Sensor keeps cooking on the boil