> All of linear algebra still applies to it. Why would I use it tho? Sure, if I upgrade from a tricycle to a warp drive space ship, I can still use the tricycl

> All of linear algebra still applies to it. Why would I use it tho? Sure, if I upgrade from a tricycle to a warp drive space ship, I can still use the tricycle by why would I when I need to haul shit across space. > Unifying a line and a circle is a classical part of projective geometry. Sure, but in Euclidean geometry, you don't really do this. Like it's essential go GA. > Quaternions and octonions are the generalization of complex numbers beyond the plane. Yes, I meant that it generalizes the concept of complex plane, not the plane itself. > It doesn't replace differential geometry. That is correct, however I still believe that you can rephrase certain DG questions as GA questions so I said that it replaces some of it.