I am going to need more than &quot;I would think that&quot; if I&#x27;m going to believe this, and considering how backlight leakage allows extra white light to emit from your screen, I&#x27;d consider that an important enough extra variable that needs to be accounted for before we just start equating &quot;pure&quot; blue lights to the complex lightwaves that come out of an LCD monitor.<p>Besides, the framing of your question is wrong.  I don&#x27;t even need to come up with a specific reason, the burden of proof lies on the makers of F.lux to demonstrate that their specific product does what it says, and simply citing inequivalent studies isn&#x27;t enough.