In which light, allow me to rephrase the argument:<p>Log as much as you can afford.<p>Given that the cost of logging is low and continuously falling, the default decision should be &quot;log everything&quot;.<p>&quot;Log only actionable messages&quot; is analogous to advice like &quot;always use bit masks instead of booleans&quot;, or only &quot;use two digits to encode years&quot;. It assumes algo-economics that are no longer the normal case.