Timr is right in that a very high probability foreseeable event doesn&#x27;t really count as a opportunity cost. I made clear to what specific point my original response was.<p>I expanded on my original analogy because Timr <i>left me with the impression</i> that he thought it wasn&#x27;t an opportunity cost because it was a law (and that made it OK). Being a law isn&#x27;t important. The predictability, when buying the property, is. My analogy also shows that even if the event is predictable, or as he would say, &quot;the rules of the game&quot;, it doesn&#x27;t mean it&#x27;s just in any ways.<p>Here&#x27;s a different analogy.<p>If you buy a farm land that gets flooded every single year on the last day of June (for the past 200 years, like clockwork), you can&#x27;t really say you lost money when the next flood happens; you should already have factored this event in overall expenses... tho it still sucks that your land gets flooded.