It's hard to succeed in academia if you aren't in a lineage. See Castelvecchi, D. "Majority of mathematicians hail from just 24 scientific ‘families’". Nature

It's hard to succeed in academia if you aren't in a lineage. See Castelvecchi, D. "Majority of mathematicians hail from just 24 scientific ‘families’". Nature 537, 20–21 (2016). https://doi.org/10.1038/nature.2016.20491 https://doi.org/10.1038/nature.2016.20491 https://www.nature.com/articles/nature.2016.20491 https://www.nature.com/articles/nature.2016.20491