  At this centenary of the discovery of superconductivity, the design of new
and more useful superconductors remains as enigmatic as ever. These materials
play crucial roles both for fundamental science and applications, and they hold
great promise in addressing our global energy challenge. The recent discovery
of a new class of high-temperature superconductors has made the community more
enthusiastic than ever about finding new superconductors. Historically, these
discoveries were almost completely guided by serendipity, and now, researchers
in the field have grown into an enthusiastic global network to find a way,
together, to predictively design new superconductors. After a short history of
discoveries of superconducting materials, we share our own guidelines for
searching for high-temperature superconductors. Finally, we show how point
contact spectroscopy (PCS) is used to detect strong correlations in the normal
state with a focus on the strongly-correlated region in the normal state of the
Fe-based superconductors, defining a new region in the phase diagram of
Ba(Fe1-xCox)2As2.
