text:  McStay points to studies of existing emotion recognition tech that assign more negative emotions to black men's faces than white men's, perpetuating harmful stereotypes. But he says there's also a broader question about what emotions really are, phenomena with biological expressions that you can neatly categorize, or something more subjective that varies too much from person to person to be measured. Hey, I know who we should ask about this. Evie, or whatever its name is.