Why do so many people not obey the posted speed limit?

Sloppiness. Anybody who does the math understands that going 5-10 mph faster increases risk but does almost nothing toward reducing driving time. Very long trips are an exception.

Driving 75 instead of 70 mph for 800 miles reduces the time from 11 hours and 26 minutes to 10 hours and 40 minutes... worthwhile after such a long driving day. Driving 100 miles at 75 mph instead of 70 mph reduces the time from an hour and 25 minutes to an hour and 20 minutes. What do they expect to do with the 5 minutes they save, and why didn't they just leave 5 minutes earlier?

Stupidity, that's why. The risk really shows up at lower speeds. The stopping distance at 35 mph is very nearly twice what it is at 25 mph.

Even the difference between 50 and 55 mph is another 20%. Every experienced driver can remember a time when they were smashing the brake and wishing with all their heart they were going just a little bit slower. They would be really smart to go that little bit slower to start with.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.