On my non-Retina screens, the "ea" is small enough that with anti-aliasing, the letters are more shapes than clearly defined letters. I remember that in the old

On my non-Retina screens, the "ea" is small enough that with anti-aliasing, the letters are more shapes than clearly defined letters. I remember that in the old days of web design (including baking text into graphics!), 8px was the point where we'd switch to a dedicated pixel font like Silkscreen.