<i>Seems</i> was a polite way of saying <i>is</i>.<p>Even with a modestly-robust drone, there will be:<p>- breakdowns<p>- fuel costs (electrical or otherwise)<p>- the need to run the task <i>repeatedly</i>, dealing with varying terrain and grazing cattle<p>I&#x27;m as big a fan of drones and automation as the next guy, but it really <i>is</i> much simpler to just stick a magnet in every cow.