'One frustrated modeller observed a lack of ethnic and gender diversity among scientists recruited to Sage, and a failure to stress-test assumptions; one Downing Street adviser, a rarity for having attended a state school, lamented that these missing perspectives created “problems in decision-making, policy development and culture”.

https://www.ft.com/content/4c378024-c3ec-4171-a0e6-4c5ad159336e