Just glancing at that essay it's pretty awfully written and repeatedly wrong. And my physics is extremely poo. Ever heard of a heatsink and then releasing it later? Decoys of simple complexity but same mass are as cheap to make as real ships of complexity? Nope.

You can start here: http://www.projectrho.com/rocket/misconceptions.php

That's exactly what I meant with 'such as'. I couldn't find that link again, thanks.

I was more concerned about general physics considerations (inertia, etc) and scale (like intercepting stuff flying at 30000km/s).

Even if he has, I'm sure he will prioritize his vision of gameplay over realism. He's already demonstrated that by mentioning cloaking fields.