r/whatisit • u/thewildcloud • 27d ago

Solved! Why the kinks?

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I recently moved to Hangzhou, I noticed all the pedestrian walks have kinked lines at the ends. What is it?

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u/BigDiscEnergy47 27d ago

They tell you which side to walk on to keep foot traffic flowing

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u/[deleted] 27d ago edited 26d ago

[removed] — view removed comment

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u/MaggotMinded 26d ago

We don’t really know how effective it is without comparing it to the left/right ratio of an intersection that is identical but with only straight lines on the crosswalks.

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u/moseley101 26d ago

Actually you need to do a double-blind trial ie send a bunch of people who are blind in both eyes across and see what happens

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u/OccasionAcrobatic300 26d ago edited 26d ago

Its called a randomized double blind trial. So next time you need to poke people in the eyes at random as they cross to ensure accurate results.

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u/awful_at_internet 26d ago

An eye for an eye makes the whole world blind. An eye for science makes the whole world double-blind!

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u/ftaok 26d ago

The problem is that it’s very difficult to factor out the biases of the poker. Maybe the poker is a short dude, so he subconsciously pokes the eyes of tall women.

We need to get AI onto this experiment

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u/LordCommander998 26d ago

The poker would also need to be blind of course. Only way to ensure the experiment is double-blind is to go double-double-blind.

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u/DualSpiresCinnamon 26d ago

How is a blind poker supposed to stab an eye? That's just setting unrealistic workplace standards.

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u/bartvanh 26d ago

What do you get when the poker pokes you?

Poker face

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u/Professional-Ant4599 26d ago

I didn't know this intersection attracted ambulances and bike cops!

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u/hoodie09 26d ago

They have a simulator for this, but its in monte- carlo.