This book titled "Einstein's Ignorance of Dark Energy" examines the origins of Dark Energy and Dark Matter that Albert Einstein ignored below the event horizons of length and time. Einstein missed a feasible extension of four-dimensional space-time because he did not consider a basic set-up of space-time alone as a vacuum energy construction with an overall distortion pattern that is caused by four interacting quadrants. The model of an extended space-time describes three space-time quadrants below the event horizons of length and time that complete the present picture. It confirms precisely the experimentally observable ratio between baryonic mass, dark energy, and dark matter of the Wilkinson Microwave Anisotropy Probe (WMAP) 7-year result, published in October 2010. The nature of a mass background field gets transparent, showing that baryonic masses are detached energy components in wrong space-time quadrants, banished and trying to make their way home via mass defects and black holes.