Avon and Soolin in “Unfinished Business”

Belkov trusts no one, which is a strength, because that means that no one can betray him. But it is also a weakness, because it means that he is the only one who can defend what is his.

Soolin

So, he makes everything self-protecting, the booby traps, the force fields.

Exactly, everything automatic and therefore predictable, and therefore vulnerable.