Scientists, engineers and industrialists were seized with excitement following the discoveries made in high temperature superconductivity in cuprates after the breakthrough in 1986 by Müller and Bednorz. Theirs was a most fruitful collaboration with consequences that must have far exceeded their wildest dreams. No well defined paths lead to great discoveries. Yet fortune favours the prepared mind. Their knowledge and expertise complemented each other and they made a shrewd decision to explore a class of materials not generally associated with superconductivity. The rest is history.