It seems to me pretty likely that the current global climate is at least a local optimum for humans.
I think this depends on what you mean by “for humans.” We’re an equatorial species, and most of our global population is living in colder climates than most of our evolutionary adaptation was geared towards. However, humans are highly robust within a wide range of temperatures; many of the species we depend upon, less so.
I think this depends on what you mean by “for humans.” We’re an equatorial species, and most of our global population is living in colder climates than most of our evolutionary adaptation was geared towards. However, humans are highly robust within a wide range of temperatures; many of the species we depend upon, less so.