There are some more details from cG here (also linked in Aaron’s post):
Externally, we were often confused with other, better-known organizations.
While we still prioritize openness and sharing our reasoning, these are now part of a broader set of values rather than the centerpiece of our identity.
A coefficient multiplies the value of whatever it’s paired with, just as we aim to amplify impact through our research, grantmaking, and partnerships. “Co” nods to our collaboration with donors and grantees, while “efficient” reflects our unusual focus on cost-effectiveness.
Agreed!