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What did you learn today?

#4,321
350125g0 said:
Today, I learned that there is a reason other than security for those CAPTCHA quizzes you fill out when you're trying to do something secure online. Did you ever wonder why you always have to identify things like crosswalks, traffic lights, road signs lamp-posts?

Apparently, that data is collected and used to improve machine learning in the AI systems used in autonomous vehicles. The data is fed into these systems in order to give them more references for things they would need to look out for on the road. I guess the more images of a crosswalk or lamp post an AI has available in it's memory, the more equipped it is to adequately react to those things in real time.

I think that's insanely cool.
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Great, but they're still a gigantic pain in the ass when having to go through 8-10 iterations of the CAPTCHAs just to access my online library account!:laugh:
 
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#4,324

There's always a bright side … Who'd 've thunk it? ;)

Braintech :wacky:

Lifestyle changes during a pandemic may be stressful, but neuroscientist David Eagleman says they help keep our brain active.

Eagleman believes the brain's unique ability to adapt to changes in the environment with amazing speed and efficiency is what makes it "the most fascinating technology" on the planet.

The one benefit to this pandemic is that suddenly we don't get how the world works and we have to rethink things.
- David Eagleman
​
"Next stop: How to "see" with your tongue."
​
 
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#4,331
PWRL said:
I learned that the "blue ice" they talk about at the Mackinaw Straits really is blue. It's not blue ice like from airplanes, though.
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Back in the mid '80s we did a camping/hiking trip in the Sierras west of Bishop. We hiked up to Long Lake where there really was blue ice (the lake was frozen over - it was about 11,000' up in the mountains.
 
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#4,335
Jeff Scott said:
Yes it was! Mid summer and lots of snow up there. Of course, as had started the hike much lower down, near Lake Sabrina, we were wearing t-shirts, shorts and lightweight hiking boots.
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I believe it. I remember good-sized snowbanks still in some places at the North Rim of the Grand Canyon in June. It still gets quite cold at night there, well into summer.
 
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#4,336
Jeff n PWRL...for your edification

FD51E17B-D9F7-4093-9F41-715F582F0905.jpeg


:D;):thumbsup:
 
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#4,337
the harp unstrung said:
Jeff n PWRL...for your edification

View attachment 4186983

:D;):thumbsup:
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Actually, a lot of places in the Midwest have some similar stuff going on. In Wisconsin, there's always a false spring that makes people run out and start skipping and throwing flower petals because they think it's spring. The next week there's usually another foot of snow before real spring comes.
 
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