> It's not likely that orcas' brains are changing on an anatomical level, said Josh McInnes, a marine ecologist who studies orcas at the University of British Columbia. "Behavioral change can influence anatomical change in an animal or a population" — but only over thousands of years of evolution, McInnes told Live Science.
> But orcas are fast learners, which means they can and do teach each other some terrifying tricks, and thus become "smarter" as a group.
It feels weird to use quotations on "smarter" or pretend this is a complicated concept when it's just describing how humans achieved greater intelligence faster than the speed of evolution.