I think the idea is that you have two different kind children.
Real descandants and baits.
You produce baits, wait near them and when another bot approaches to eat the bait, the bait weakens the attacker(poison. shots etc) and after the enemy comsumed the bait ,the trapper knows an enemy attacked and comes to finish him of.
thats what I think he means
Or he could mean to produce low energy swarms that can sacrifice most of their members, sacrifice a few so the rest get the big catch.