It&#x27;s not a problem of &quot;doing more&quot; or &quot;doing less&quot;. It&#x27;s that, based on the available choices the actor has (&quot;aid&quot;&#x2F;&quot;don&#x27;t aid&quot;&#x2F;&quot;aid conditionally&quot;), the actor picks the outcome which disproportionately favours him, while the other actor has a limited range of strategy available.<p>If your house is burning and the fire brigade is too busy to help, and your neighbour Bob comes with a fire extinguisher and a smile on his face, and proposes to give you the fire extinguisher in exchange for your new car, I sure hope there won&#x27;t be any hard feelings next time Bob drives past your house.