That wiki page suggests that the sails are articulated? In the video these are very much fixed sails - looks like battens of woods lashed or nailed together so I don't think the sails themselves can turn.

I do wonder which way the prevailing wind is for those windmills though as they are surrounded by walls. The knee jerk reaction is that the wind comes "face on" but then surely there would not be a turning force if the wind blows on both sides of the axis equally (especially since the sails look to be fixed)

I did notice there was a small vertical slit on the back wall, which makes me wonder if the wind blows "sideways" and generates lower pressure by blowing over the slit, causing the sails to move.

The distance these cover and the depth they tunnel into mountains is part of what makes them incredible, in case the description of underground aquaducts doesn't sound cool enough.

3000 years old: https://www.nationalgeographic.com/news/2017/05/iran-qanat-i...

> The technology spread, through Silk Road trade and Muslim conquest, and qanats can be found as far as Morocco and Spain.

I know that in Europe Millers were treated and depicted literally satanic for their use of cleverness to gather work passively and riches without conquest or subjugation. Their greatest sin was not fitting in with the expectations of the social order.

People whinge about new things. You don't see anyone complaining that the pyramids are an eyesore or the Arc de Triomphe is a waste of taxpayers' money.

> Persians are very smart people

I agree, but doesn't this have more to do with the stability of their society, in that period?

I wonder if they enjoyed fame and technical 'supremacy' (pardon the term) at the time kinda like the western world in the last century.

I suspect many bread makers would immediately recognize the name of the province where the windmills are located.

https://en.wikipedia.org/wiki/Khorasan_wheat

Yes, wheat into flour for naan. In this video[0] linked by twic you can see them in operation

0: https://www.youtube.com/watch?v=Uv3Pn2DFkDw

'In one of the most iconic scenes in British television comedy, Trigger, the butt of so many ‘Only Fools and Horses’ jokes, proudly reveals that he has used the same road sweeping brush for his entire career. “This old broom”, he says “ has had 17 new heads and 14 new handles”. We, the audience, are laughing at his apparent stupidity long before Sid points out “how the hell is it the same bloody broom then?”'

"This is not the same river! All the water is new!"

And of course there is a “Wait but Why” article about that...

PS: scroll down to “Continuity”

https://waitbutwhy.com/2014/12/what-makes-you-you.html

Well so are you. None of you exists from ten years ago. Are you still you?

relevant -> https://lullabydust.tumblr.com/post/65438836771/john-dies-at...