Its a tough feature to implement- the sun's position in the glass depends on your perspective as well, not just the sun's position in the sky. Easier to do in a helmet than in a windshield, I suppose.
I think he's saying here that intuition is sufficient for high school math, but not sufficient for college. That's not to say that it isn't necessary, only that it isn't sufficient.
Its a tough feature to implement- the sun's position in the glass depends on your perspective as well, not just the sun's position in the sky. Easier to do in a helmet than in a windshield, I suppose.
I think he's saying here that intuition is sufficient for high school math, but not sufficient for college. That's not to say that it isn't necessary, only that it isn't sufficient.