A device for the mechanical and analogue recording and reproduction of sound is a phonograph, also known as a gramophone in later variants (as a trademark from 1887).
In order to make way for fresh learning, unlearning is a mechanism that enables us to learn from a past experience or pattern. It is vital to let go of outdated operating systems and practises in order to make room for new ones if we are to keep up with the changes taking place in all areas of life.