1. Nah, recent posts are at the top, so that's where responses go, that's all. Advertising doesn't "work" unless it results in a sale. In this case, every time you bring up the subject it only makes me think more on the issue which more firmly entrenches me in my position.
2. Your strict adherence to an often arbitrary rule and demand that others do the same has the texture, aroma, as well as the taste of a deuce. Now you know how incredibly accurate my tactile and olfactory senses are too. Also see 1 above. If the product was good, spending more time thinking about it should make me agree, but if the underlying principle is as flawed as it is, the opposite effect occurs.
3. You don't need documentation, (although you could probably find some) simple logic and a handful of obvious facts will suffice if the goal is to show that speed limits are imperfectly chosen:
What are the chances that they set the speed limit at the absolute maximum safe speed that a mint condition new vehicle with an experienced driver in ideal road conditions can navigate?
Is it not just a wee bit more likely that they either aim it towards an average if not even lower?
Also, speed limits virtually never increase despite very significant upgrades to vehicles and roads, which doesn't make sense.
E.g. highway 2 in Canada: it's been 65mph my whole life, had upgrades to the rail guards, widened lanes, and added additional lanes while cars gained ABS, skid control, better tires, lane departure warnings and I'm sure a bunch of other car stuff.
Yet no change I speed limit...so either the speed limit was way too high in the 60s, or it's very conservative right now, and either(or both) of those makes my case that the number is pulled out if someone's rear or at least isn't infallible.
E.g.2 Edmonton &Calgary playground zones.
Up until 2107 Edmonton did not have 20mph zones near playgrounds, just schools on school days. Then despite the fact that the number of accidents was virtually the same as Calgary with its year-round zones, they were added to Edmonton as a political move.
(Calgary and Edmonton have pretty much the same pop & pop density)
Not a whole lot of unsupervised kids chasing a ball across the street at a park in 2 feet of snow 4 hours after sundown at minus 30.
4. TL;DR
iirc part of what you considered the strongest part of your argument was the statistcs that showed a correlation between speed and accidents.
The issue I raised was that statistics such as those are very flawed as they don't take specific variables into account.
Here's an example, of what I mean:
I live in a jurisdiction where you can legally turn right at a red light after coming to a complete stop.
I'm sure you can find a statistic showing that not stopping completely causes accidents x% of the time.
Here is a situation where those stats arent relevant:
That semitruck is a perfect blocker for my right turn, and the odds of an accident caused by my failure to completely stop at the red light become infinitesimal.
The same goes for driving at a speed over the posted limit. Under some circumstances the increased risk is barely measurable.
So my position remains that if someone wants to do 70 in a 65 you can just move over and let them.