"Large brains mean intelligence" is one of those ideas from the Eugenics-and-phrenology era of science that we just can't seem to get rid of. So if their brain

"Large brains mean intelligence" is one of those ideas from the Eugenics-and-phrenology era of science that we just can't seem to get rid of. So if their brains are, you know, only eleventy times the size of a crows, how could they possibly have mastered the supreme technology of "broken sharp rocks" or "sometimes you can keep a fire going from embers and use it to burn shit"? Our best geniuses with IQs of 140+ can barely manage those tricks. The assumption should be, going forward, that if you deem them closely enough related to our own species that you're putting them in the same genus, they were probably at least as intelligent as the bottom quintile of H. sapiens, with exceptional individuals up above that. Anything else is just bizarre prejudice.