this is the sort of phenomena they are talking about

what perfect mirage?

your perfect mirage is a confirmation bias, an idea you have made up for yourself based on bad data

please show me a picture of the perfect mirage, from, like, an .edu .gov or .mil site

and not a zany YouTube vid?

You are taking text that is warning navigators about phenomena that can make them misjudge distances, and reading far more into it than is actually in the text.

Go there, see it for yourself, take a picture, get back to me

cheaper than a caribbean cruise probably

It is warning of a potential event, you are very unlikely to see it like that, mirages are heavily dependent on multiple factors

You think you could see a mirage from 300 miles away over a curve. I get your point.

And this is your 5 mile high ice wall right? https://media.discordapp.net/attachments/489627090300305418/566331752692449300/FlatEarthMemeFail-DistanceToAntarcticMountains.jpg

No, I think mirages in the area could convince a navigator they saw a mountain that is actually 300 miles away, because the navigator did not see the mountain, but instead a mirage that upon visual inspection resembles that particular mountain, but since he's in the right area for those sorts of mirages to be possible, he could actually be so far away from the real mountain that it can not be spotted. Since the entire block is about mirages.

This is a fake iceberg, it just isn't real, it isn't real anywhere

Could you explain this one?

So this text to educate and warn navigators is saying that in the past seasoned navigators thought they spotted the mountain they were expecting, but was actually 300 miles away from where they thought they were, do you understand?

Ah, now this one is easy, the village shaman blessed the kayak, and everyone knows that bird bones have helium cores.

Are you serious, or tongue in cheek?

Yeah I'm serious. How do you explain the sun rays. Also clouds behind the sun.

And moon

Lots of things are in play when sun light is being filtered down through clouds, that particular image was cherry picked, I'm sure they would've ignored this one:

or this one

just use your own hands with a light bulb overhead and see how different you can make the light appear from your perspective depending on where your hands are blocking light

clouds are more chaotic than your hands, and not only block light, but can block different amounts of light depending on the opacity/thickness of the clouds, water vapor density, etc

So if you go straight east from NYC, you will traverse the entire atlantic only to eventually hit an ice wall?

Or, again, if it is supposed to be straight south, you hit an ice wall after a terribly long voyage, instead of south america in a much shorter voyage? (or europe as with the east direction)

And all of our pilots, ....

are in on this conspiracy

The North Pole is a magnetic field. So we when you are going east you would make a perfect circle

If you are serious, then it is sad how you cannot appreciate how much this undermines very real conspiracies that people need to be informed of, it helps to make real conspiracies look like intangible conspiracy theories

east from where?

Why are white people white, and black people black?

It is completely understandable in economics, as it is more profitable to have a stopover instead of flying five people from Perth to Johannesburg