You could also extrapolate this into more than two terms by squinting your eyes and saying that λ ∈ {1, -1} is close enough to λi ∈R^d ∣ ∥λi ∥=1. No idea if it

You could also extrapolate this into more than two terms by squinting your eyes and saying that λ ∈ {1, -1} is close enough to λi ∈R^d ∣ ∥λi ∥=1. No idea if it would result in better performance, but that's research babyyyy!