In fact, we do have now computational tools at our disposal that allow us to do such calculations routinely and with relatively well-known accuracy . All remaining open issues of this original mission are well identified and understood. In other words, we are now able to solve the complex high-dimensional partial differential equations that govern quantum many-electron systems for arbitrary nuclear frameworks (even with rigorous error assessment 9-14 ). Clearly, the dimension that scales with the number of elementary particles in the molecular system cannot be arbitrarily large for feasibility reasons, but the field has made the remarkable achievement of providing routine solution methods for partial differential equations whose dimension is set on input of a computation by providing the number of electrons of a reasonably sized molecular structure or unit cell. It therefore appears evident that what remains from the original program is rather straightforward to accomplish in the light of the past achievements. And in fact, it is most likely to take only a fraction of the effort invested so far, to bring the original mission to an end for practical purposes.