&gt;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<p>Man who the fuck cares. Millions of people use f.lux every day - personally, it&#x27;s the first thing I install on any PC or Laptop I know I&#x27;ll be using for a while.<p>It doesn&#x27;t matter whether you have proof one way or the other.<p>Use it, or don&#x27;t - honestly nobody gives a shit.