As a warning, this survey must not be taken as expressing any quantitative publication or field statistics. If nothing else, it's an expression of confirmation bias, as only successful cases are reported. As a counterexample, I could cite the theoretical predictions of cyclobutanone S2 lifetime, which span three orders of magnitude depending on the theoretical approach employed (Figure ). Moreover, each section delivers a compact account of the case study in point, focusing on a couple of theoretical and experimental papers. However, science never happens as isolated accidents. Each such case has rich histories that deserve in-depth reviews on their own. Therefore, I strongly recommend that the reader backtrack the literature cited in the papers I mentioned to build a more complete picture of each field.