>How would you know a priori that doing it is better than what you could otherwise do with your life? You don't. Just as equally you can't say a recommendation

>How would you know a priori that doing it is better than what you could otherwise do with your life? You don't. Just as equally you can't say a recommendation is harmful that you haven't actually evaluated or performed yourself. No one dismissed opportunity cost, in fact its was clearly stated above that everything has a cost, both doing and not doing something.