Well, the initial idea, when I started implementing normal orientation, was that if we pick only a projection of the 3-dimensional solution to an orientation vector then that projection can't be larger than the norm of he 3d solution. But this isn't very precise (hence the `+ 0.8`, making this test absurd), I think because of the regularization when inverting `Ck`, which is not necessary in the normal orientation case (since then we're inverting a scalar). So this test should be removed, I think. I'll have to write better tests for the normal and max-power orientation cases.