Our recent work on divergent photosensitizer controlled reactions of 4-hydroxycoumarins and unactivated olefins has been published in Angew. Chem.. This work originates from a serendipitous observation by Rui who found that different photocatalysts gave different products under otherwise identical or similar conditions. Check it out here if you are interested: https://onlinelibrary.wiley.com/doi/10.1002/anie.202309897