Do me a favor. Explain why cutting down on the time and distance needed to avoid a collision is a bad thing. Because that's the whole idea behind lowering the speed limit, is to give people more time to react and avoid whatever's in the road. That's especially true at night, when your senses can be dulled and your reaction time takes one hell of a hit, hence why quite a few highways have differing day/night speed limits.
Or did you not even consider that before ya went off? Also, you apparently missed the word "example" in that post. Saying someone is ignorant, and then being ignorant yourself -really- doesn't make you look much better.
Are you aware of how slow 40mph is on a highway? We're talking about an invasive animal here, not children playing kickball.