He says geometric algebra was right about the problem, wrong about the fix (alexkritchevsky.com)
Alex Kritchevsky splits the movement into two claims and accepts one. Exterior algebra — wedge products, multivectors, duality — should be taught early. Fine.
The Geometric Product, which fuses a scalar and a bivector into a mixed-grade object with no general geometric meaning, he calls operator composition wearing a costume, useful mainly for rotations.
A reviewer of GA papers and an animation engineer both said: that's exactly the boundary.
Sign in to save