I am thinking that quantum mechanics has always existed, and therefore is not an invention. It's a discovery. Just like we cannot say that Columbus (or the Indians) invented America. It is a bit difficult to comprehend, because the universe was not designed for us to understand it or how it works. There may be an operating system, but it is not human-user friendly.
Did Quanta all have diffrent waveform before they were observed?
Did Quantum mechanics have a diffrent state pre its discovery?
How will we know?
Pass me some of that salad.