&gt; Early life is fragile<p>&gt; The aliens are silent because they are extinct<p>&gt; new life would commonly die out due to runaway heating or cooling on their fledgling planets<p>I&#x27;m not disputing the science or studies the article refers to (I&#x27;m far from qualified for that), I believe that models of plausibility are an important part of the process, but as with most science journalism they just can&#x27;t help turning them into some sort of &quot;absolute&quot; statements.