The controller comprises a power circuit, a control circuit, an interlock circuit, a delaying reset circuit, a startup recording meter, a sound indication circuit and an interlock circuit.

This is true even for Numbers on the cash flow statement like "cash increase from sales minus expenses", which may sound like they are indication of profit but are not.

Strange as it might seem, this is the sound of the hottest material in the universe and an indication of what conditions will have been like just micro-seconds after the Big Bang.