BigThink, ironically, is sponsored by the Charles Koch Foundation.

Can you cite this? All I see is that BigThink is owned by FreeThink [0], and FreeThink appears funded by Bedrock Capital and MaC Venture Capital [1], neither of which I can tell are associated with the Charles Koch Foundation [2][3].

That said, I've spent ~5 minutes on this, so I certainly missed something.

[0] https://bigthink.com/our-mission/

[1] https://www.crunchbase.com/organization/freethink-media/comp...

[2] https://www.linkedin.com/company/bedrockcap/

[3] https://www.linkedin.com/company/mac-venture-capital/

It is on their web site:

https://bigthink.com/people/charles-koch-foundation/

That says nothing about sponsorship. At best, it implies a vague partnership, which is fundamentally different.