I looked at 10,000 toy bricks and they were all green so I can say with great confidence that &quot;All toy bricks are green.&quot;<p>That&#x27;s an example inductive reasoning. It&#x27;s <i>quite</i> flawed as a way of extrapolating from known information in to the unknown because it doesn&#x27;t account for the things you don&#x27;t know. In the same way, saying &quot;Fake Facebook accounts post with <i>this frequency</i> or <i>these few words</i>&quot; doesn&#x27;t work, because it only considers the accounts that do. It can&#x27;t detect the bots that don&#x27;t.