Thank you for the pointers. I see, "perfect" geometry is not necessarily good typography, and that these "imperfections" have reasoning behind them, for legibility, better balance, to give more natural/correct feel.
I can understand the "near-perfect" circle, but wouldn't you agree that the (mis)alignment of the green and red arcs' edges feels wrong? Not about typography/legibility, but about the balance of lines. Interestingly, in the Futura font, which is quite similar to Google's Product Sans, the top line of the G extends a little further, so that its edge would have lined up "perfectly" as I would have preferred. For comparison: https://qph.ec.quoracdn.net/main-qimg-4c522c183600dbc2ede9aa...
I can understand the "near-perfect" circle, but wouldn't you agree that the (mis)alignment of the green and red arcs' edges feels wrong? Not about typography/legibility, but about the balance of lines. Interestingly, in the Futura font, which is quite similar to Google's Product Sans, the top line of the G extends a little further, so that its edge would have lined up "perfectly" as I would have preferred. For comparison: https://qph.ec.quoracdn.net/main-qimg-4c522c183600dbc2ede9aa...