Vector Gibberish

This little booklet grows out of some short scraps of notes and essays, with the
main texts written back in my college years at Tj. The materials we are going to explore, as the title indicates, all has something
to do with “vectors”, not just vectors in the 3D Cartesian space, but also more
abtract ones, such as a linear approxiamtion. Indeed, the linear regime is usually
the only part of science that is under theoretical control and thus of fundamental
importance.