On 2. You can't run reversible logic on our currently non-reversible logic and expect to see less power usage. If you had two reversible computers you could rev

On 2. You can't run reversible logic on our currently non-reversible logic and expect to see less power usage. If you had two reversible computers you could reverse the output of the other while consuming minimal energy just as a single reversible computer could reverse it's own output. The operations must be run forward at least once, or technically you don't have the outputs to input to the reverse.