> If you can do orbital math, you can verify the plane-change economics. If you’ve even talked to anyone in ABM, which granted requires clearance, you understan

> If you can do orbital math, you can verify the plane-change economics. If you’ve even talked to anyone in ABM, which granted requires clearance, you understand why the actual spending in ABM—globally—goes into ground-based interceptors. Boost phase interception using a constellation of several thousand hypersonic glide vehicles circumvents the plane-change problem; I'm sure you know that. I'm sure you also know that the reason nobody has seriously pursued such a solution before is because putting tens of thousands of interceptors into orbit is absurd. Was absurd.