I may have put this in here before, but it still drives me nuts.
I was in a Costco parking lot yesterday. Sign says Speed Limit 8 km/hr. Why eight and not 10? Because it’s a calculated number from Costco’s rule in America which is 5 mph.
All they care about is wanting people to slow down. That’s it. Things should be rounded to reasonable numbers.
At that low speed, your car’s speedometer will not be precise enough to even show the difference between 8 and 10 km/h.
actually, never mind.
I don’t know what sources you’re looking at, but
Cleveland Clinic: “Most people are born with two eyes. Working together, they give you a field of view about 200 degrees wide and 135 degrees tall.”
University of Aukland: “The eye receives data from a visual field of about 200 degrees…”
Stanford University (EE 267 Virtual Reality): “visual field: ~200°”
Tobii: "The binocular human visual field spans about 220 degrees horizontally and 135 degrees vertically. "
Wikipedia: “Humans have a slightly over 210-degree forward-facing horizontal arc of their visual field (i.e. without eye movements),…”
Perhaps what you’re looking at is the FOV of one eye, or the binocular FOV (the area seen by both eyes).
I might be slightly confused/mistaken, but still, mostly-correct.
Going on what I know, I was assuming that it was symmetrical; that the sunrise would be displaced from true east by the same amount and the same direction, as the sunset would be from true west.
A few different simulations that I have run seem to show that from Sacramento, on the day of the Summer Solstice, it rises slightly south of the east/west line, but sets north of it. I don’t have any rational explanation at hand for this asymmetry.
That was from a quick Google search, which gave me hits suggesting that range. On looking at the hit that said 120°, I now see that that was for one eye.
In trying to further research the question, based on what I can Google up, and what I already know about optics, photography and trigonometry, I am coming up with some wildly-conflicting answers.
Apparently, the issue is much more complex than it seems to be that it ought to be.
Performing a crude experiment on myself, I am finding that my FOV, using both eyes, is approximately 180° horizontally possibly a bit more, possibly a bit less, but not by very much. And most of it really isn’t very useful. Image quality drops off very sharply toward the outer parts of the range. Perhaps that is why a “normal lens”, defined in photography as a lens that approximates the field of view of a human eye, only has a FOV of about 40° much less than the entire FOV of an eye; perhaps it only means the part of the eye’s FOV that has a reasonable degree of image quality.
Using one eye, 120° seems a reasonable guess as to how much FOV it gets, again, with a very sharp image quality loss very far from the middle.
I’m having to remove my glasses to make these crude measurements, since they impose hard limits on my FOV; which, of course, distorts my ability to judge the image quality, but even so, it is clear that my eyes produce a much better image toward the middle than toward the edges. It seems to me now that 40° may indeed reflect the truly usable part of a human eye’s FOV.
The foveal field, which has the highest visual acuity, is quite tiny, only a couple of degrees wide. Peripheral vision is indeed quite coarse. But it’s not very relevant when talking about seeing the sun. You don’t need high acuity to see that thing.
However it seems that I was indeed incorrect when I said that the sun never appears in the north in the northern hemisphere.
In any event, I stand by this much:
Yeah. There was a corner at a grocery store that one ‘street’ had a yeild, and the other a stop sign. So you yeild to the people that have to stop?Um what? It made no sense at all.
I have seen signs,
18 MPH
CHILDREN
PLAYING
The odd speed is meant to draw attention to itself so your eye doesn’t skip over it like 15 or 20 would be.
Speaking of annoying, there is a street I use all the time – it leads to the library – with a posted speed of 25 that I constantly, accidentally speed a bit on because it looks like a 30mph street to me. I can only figure that the slower speed is because there is angle parking along it and the engineers are worried about people backing into the faster moving traffic.
Everywhere in the world, during the months between the March and September equinoxes, the sun rises further north than due east, and sets further north than due west. The only exceptions being in the high southern latitudes on days when the sun doesn’t rise at all.
Where I live, at 53 degrees north, the sun rises almost exactly north-east and sets almost exactly north-west on the day of the June solstice.
Back on topic, an infuriating thing about car doors. Car doors can be closed to a point where they are latched closed but not fully closed. This is an unwanted feature (or an unwanted by-product of an intended safety feature). Nobody ever wants the door to be partly closed. It is never the desired condition. It is a condition that, when it arises, gives rise to a warning light and needs to be remedied before driving or securing the car.
When a passenger who is not used to closing car doors (or maybe unused to the action needed to close the door of that specific car) gets out and walks away having failed to close it properly, the driver may well have to get out of the car, walk around, open the door and close it properly. Or if it is the front-seat passenger door, reach across, open and close, which is quite awkward to do from the driver’s seat.
When a passenger fails to close the door properly, and is asked to close it properly, they are liable to overcompensate by slamming the door closed rather than pushing (or pulling) it firmly closed.
Like so many annoying features of car design, this one has persisted for decades without apparent improvement.
Hmmm. I haven’t encountered this problem in any of the cars I have owned in the last twenty years. I remember this annoying problem in my 1995 and my wife’s 1994 model cars, but I’m pretty sure not in the 2002, 2005, 2009, 2014, 2019 and 2025 models we have owned since. And with these last six cars we have raised a girl, who I assume would be the demographic most likely to not shut a car door firmly enough.
My business partner and I supply a couple of circuit boards to a local manufacturer. Somewhere along the line, they got the idea that the boards we were supplying were junk, so they wanted to be able to test them ( even though they are all 100% tested before we ship them). Recently, we got 50 boards returned. When I re-tested them, they all passed. I went down to the company, and asked why they were rejected. They said that they had failed the incoming test. So, I had them show me. Sure enough, the first board I tried, failed. But - it was also obvious that the tester was acting up. I could see the power flicker on the board as I flexed the tester cable. I said “the tester is bad.” Now, I could understand rejecting a board now and then, if it failed test, but if suddenly every single board was failing, wouldn’t you get suspicious? I mean, if you walked in and turned the light on, and it’s didn’t work, you might immediately replace the bulb and try again - but you would’t buy 50 new, tested bulbs and throw them all away if they didn’t light up, right? You might start to suspect that the problem was that the lamp wasn’t plugged in, or there was a power failure, or you hadn’t paid your electrical bill…
Morons.
You go to the same library as me!
Though I go 25mph… 
There are soft-close doors available in cars now (similar to the soft-close drawers in your bathroom or kitchen). At this stage they seem to be a mainly premium product (BMW, Aston Martin etc), but, as with all new car features, they will find their way into standard-level cars over the next few years.
Incredibly petty but irritating every time I see it:
A local school is having a fundraising raffle for this year’s graduating class and we bought tickets. I put them on the fridge until the draw, so I see them regularly.
They read:
GRAD 26’ RAFFLE
That apostrophe enrages me.
Please. The current Administration enrages me. Big Tobacco enrages me. Bad drivers. People who do bad things to pets and other animals needlessly. People who wear so much smelly stuff it forms a visible cloud.
A bad apostrophe isnt even a 2 on the 1-100 scale.
Of course- that’s just In My Humble Opinion. 
Those are all things that do have importance and one should be enraged by, i.e, not the topic of this thread.
The fact that it infuriates @mnemosyne is, well, the point of this thread, yes?