https://www.nature.com/articles/s41586-023-06600-9
Authors. Sharma, Czégel, Lachmann, Kempes, Walker & Cronin
Venue. Nature 622, 321
How the Institute flags it
frontier 1 time speculative 1 time
This source carries more than one flag across the corpus. That is not an inconsistency to resolve: the same work can be established evidence for one claim and frontier evidence for another, and the flag belongs to the use rather than to the source.