Computation

An hour at lunch today working some vector problems. Fairly straightforward stuff, like converting a generic basis to an orthonormal one and decomposing vectors into a subspace member and a member of an orthogonal subspace. Simple enough in concept, but I'm appalled by how rusty I am at actual computation. My daughter has the same problem: she understands the ideas, but really gets hung up on actually running the numbers. I guess she comes by it honestly. I'll just have to take the advice I give her: drill, drill, drill.