I read the headline and wondered:<p>&quot;Since when is &#x27;Bad Luck&#x27; anything other than a euphemism for the physiological stress which is symptomatic of poverty?&quot;<p>Clever science journalists note that nearly everything outside of the organism can be generically labeled as the <i>environment</i>.<p>__As a reply to DanBC:__<p>&gt;normal random mutation<p>This phrase does not mean anything in terms of molecular biology or genetics.  It is equivalent to &quot;Bad Luck&quot;, or &quot;mutation triggered by something&quot;.  The phrase is inappropriate because it equates point mutations, insertion mutations and deletion mutations.<p>As a rule, when thou wants to say the modifier &quot;normal random&quot;; thou should instead say &quot;normally distributed&quot;, and then make sure that is worth mentioning in that field of science.