the formality slider (play with it at the google fonts page linked in the article[0]) is genuinely one of the coolest uses of a variable font axis i've seen in recent memory. it feels like we're witnessing the slow and steady vindication of metafont.
That’s the coolest thing!And “bounce” slider. What a time to be alive… I wonder if there are more fonts like that with special adjustments. Still waiting for technology to allow handwritten font with true randomness.