Big Bang, Black Holes and Gravitational Waves now appear as compelling – even Obvious –consequences of general relativity. Therefore, it may seem surprising that none of these ideas were readily accepted. Not only was there considerable debate, but in fact leading figures were often arguing on what turned out to be the “wrong side” of history. These developments provide excellent lessons for younger researchers on how science un-folds. Paradigm shifts in science occur when younger researchers have the courage not to accept ideas merely because they are mainstream; patience to systematically develop novel avenues they deeply believe in; and maturity to accept that a variety of factors – not all logical or even science related – can drive or slow down scientific progress.
