well, this has been not true for a long time now. Mines. Anti-personnel, anti-tank, whatever. Those are killing automata, some very simple, some quite smart -

well, this has been not true for a long time now. Mines. Anti-personnel, anti-tank, whatever. Those are killing automata, some very simple, some quite smart - not that easy to kill a tank with high probability. so, yeah, there will be next gen mines, combine a rifle with some sensors and a field of fire. voila, a stand off weapon covering your flank, nothing comes through this alley for a while.