On the political front it boiled down to the terms of Second Treaty, which, eighteen years ago, had terminated the second Red-Blue war, sometimes called the War in the Woods to distinguish it from the earlier War on the Rocks. The treaty imposed strict limitations on the number of robots that either side could send down to the surface. For that matter, it also limited the number of humans; but the upshot was that, given those limits, human surveyors could gather more useful information about conditions on New Earth than could robots beaming data up to the ring.