CLOSE
Original image
Thinkstock

9 Tracks With Facts: An Independence Day Playlist

Original image
Thinkstock

Your guests will delight in these American classics, and you can serve them bits of musical Americana, one song at a time.

1. "Star-Spangled Banner," Jimi Hendrix

Fact: Paul Allen (of Microsoft fame) now owns the white Stratocaster guitar on which Hendrix performed his famous rendition of the National Anthem at Woodstock.

2. "America," Neil Diamond

Fact: This was the theme song for Michael Dukakis’s 1988 presidential campaign.

3. "American Pie," Don McLean

Fact: Your guests will already be aware that the song was inspired by the tragic deaths of musicians Buddy Holly, Richie Valens, and the Big Bopper in a plane crash on February 3, 1959, also known as “The Day The Music Died.” But throw in a lesser-known tidbit: Don McLean was a 13-year-old paperboy on that day and learned the news the next morning when he opened his morning stack of papers and saw it on the front page.

4. "Firework," Katy Perry

Fact: The inspiration for the song came, in part, from Jack Kerouac’s On the Road. The passage that inspired her:

"…the only people for me are the mad ones, the ones who are mad to live, mad to talk, mad to be saved, desirous of everything at the same time, the ones that never yawn or say a commonplace thing, but burn, burn, burn like fabulous yellow roman candles exploding like spiders across the stars and in the middle you see the blue centerlight pop and everybody goes 'Awww!'"

5. "Pink Houses," John Mellencamp

Fact: In 1984, MTV bought a pink house in Indiana to give away as a part of a promotion associated with the Mellencamp single. In addition to the house, the winner received a pink Jeep full of Hawaiian Punch and Mellencamp grilled and jammed for her and some friends at her housewarming party.

6. "American Girl," Tom Petty and the Heartbreakers

Fact: The band recorded the track on the 4th of July, 1976.

7. "Living in America," James Brown

Fact: Many know it as Apollo Creed’s anthem from Rocky IV (get the MF Balboa/Creed t-shirt here) but they may not know that, despite being unfamiliar territory for Brown (singing a song someone else had written and doing so specifically for a film), it earned him a Grammy and was his second biggest hit—second only to “I Feel Good,” which he recorded 20 years earlier. Another fun tidbit: Weird Al Yankovic recorded a parody version of this number entitled “Living with a Hernia.”

8. "God Bless the U.S.A.," Lee Greenwood

Fact: A crowd-pleaser from its inception, when Greenword first introduced the song into his shows, he featured it in the middle of the show simply because it was new. After two weeks, the audience reactions to the songs forced Greenwood to move it to the end of the show as his encore. In his own words, “I couldn’t follow it.”

9. "The Star-Spangled Banner," Whitney Houston Super Bowl XXV version OR Beyonce 2012 presidential inauguration version

Fact: Everyone was in a tizzy when we learned that B lip-synced her inauguration version of the anthem, but the oft-praised 1991 Super Bowl performance by Whitney Houston was also pre-recorded. Whitney sang, but the microphone was off and the audience, both in Tampa and at home, heard a taped version. Bottom line: they are both amazing. Take your pick. You can’t go wrong, here.

Whitney:

Beyonce:

Original image
iStock // Ekaterina Minaeva
arrow
technology
Man Buys Two Metric Tons of LEGO Bricks; Sorts Them Via Machine Learning
Original image
iStock // Ekaterina Minaeva

Jacques Mattheij made a small, but awesome, mistake. He went on eBay one evening and bid on a bunch of bulk LEGO brick auctions, then went to sleep. Upon waking, he discovered that he was the high bidder on many, and was now the proud owner of two tons of LEGO bricks. (This is about 4400 pounds.) He wrote, "[L]esson 1: if you win almost all bids you are bidding too high."

Mattheij had noticed that bulk, unsorted bricks sell for something like €10/kilogram, whereas sets are roughly €40/kg and rare parts go for up to €100/kg. Much of the value of the bricks is in their sorting. If he could reduce the entropy of these bins of unsorted bricks, he could make a tidy profit. While many people do this work by hand, the problem is enormous—just the kind of challenge for a computer. Mattheij writes:

There are 38000+ shapes and there are 100+ possible shades of color (you can roughly tell how old someone is by asking them what lego colors they remember from their youth).

In the following months, Mattheij built a proof-of-concept sorting system using, of course, LEGO. He broke the problem down into a series of sub-problems (including "feeding LEGO reliably from a hopper is surprisingly hard," one of those facts of nature that will stymie even the best system design). After tinkering with the prototype at length, he expanded the system to a surprisingly complex system of conveyer belts (powered by a home treadmill), various pieces of cabinetry, and "copious quantities of crazy glue."

Here's a video showing the current system running at low speed:

The key part of the system was running the bricks past a camera paired with a computer running a neural net-based image classifier. That allows the computer (when sufficiently trained on brick images) to recognize bricks and thus categorize them by color, shape, or other parameters. Remember that as bricks pass by, they can be in any orientation, can be dirty, can even be stuck to other pieces. So having a flexible software system is key to recognizing—in a fraction of a second—what a given brick is, in order to sort it out. When a match is found, a jet of compressed air pops the piece off the conveyer belt and into a waiting bin.

After much experimentation, Mattheij rewrote the software (several times in fact) to accomplish a variety of basic tasks. At its core, the system takes images from a webcam and feeds them to a neural network to do the classification. Of course, the neural net needs to be "trained" by showing it lots of images, and telling it what those images represent. Mattheij's breakthrough was allowing the machine to effectively train itself, with guidance: Running pieces through allows the system to take its own photos, make a guess, and build on that guess. As long as Mattheij corrects the incorrect guesses, he ends up with a decent (and self-reinforcing) corpus of training data. As the machine continues running, it can rack up more training, allowing it to recognize a broad variety of pieces on the fly.

Here's another video, focusing on how the pieces move on conveyer belts (running at slow speed so puny humans can follow). You can also see the air jets in action:

In an email interview, Mattheij told Mental Floss that the system currently sorts LEGO bricks into more than 50 categories. It can also be run in a color-sorting mode to bin the parts across 12 color groups. (Thus at present you'd likely do a two-pass sort on the bricks: once for shape, then a separate pass for color.) He continues to refine the system, with a focus on making its recognition abilities faster. At some point down the line, he plans to make the software portion open source. You're on your own as far as building conveyer belts, bins, and so forth.

Check out Mattheij's writeup in two parts for more information. It starts with an overview of the story, followed up with a deep dive on the software. He's also tweeting about the project (among other things). And if you look around a bit, you'll find bulk LEGO brick auctions online—it's definitely a thing!

Original image
Cs California, Wikimedia Commons // CC BY-SA 3.0
arrow
science
How Experts Say We Should Stop a 'Zombie' Infection: Kill It With Fire
Original image
Cs California, Wikimedia Commons // CC BY-SA 3.0

Scientists are known for being pretty cautious people. But sometimes, even the most careful of us need to burn some things to the ground. Immunologists have proposed a plan to burn large swaths of parkland in an attempt to wipe out disease, as The New York Times reports. They described the problem in the journal Microbiology and Molecular Biology Reviews.

Chronic wasting disease (CWD) is a gruesome infection that’s been destroying deer and elk herds across North America. Like bovine spongiform encephalopathy (BSE, better known as mad cow disease) and Creutzfeldt-Jakob disease, CWD is caused by damaged, contagious little proteins called prions. Although it's been half a century since CWD was first discovered, scientists are still scratching their heads about how it works, how it spreads, and if, like BSE, it could someday infect humans.

Paper co-author Mark Zabel, of the Prion Research Center at Colorado State University, says animals with CWD fade away slowly at first, losing weight and starting to act kind of spacey. But "they’re not hard to pick out at the end stage," he told The New York Times. "They have a vacant stare, they have a stumbling gait, their heads are drooping, their ears are down, you can see thick saliva dripping from their mouths. It’s like a true zombie disease."

CWD has already been spotted in 24 U.S. states. Some herds are already 50 percent infected, and that number is only growing.

Prion illnesses often travel from one infected individual to another, but CWD’s expansion was so rapid that scientists began to suspect it had more than one way of finding new animals to attack.

Sure enough, it did. As it turns out, the CWD prion doesn’t go down with its host-animal ship. Infected animals shed the prion in their urine, feces, and drool. Long after the sick deer has died, others can still contract CWD from the leaves they eat and the grass in which they stand.

As if that’s not bad enough, CWD has another trick up its sleeve: spontaneous generation. That is, it doesn’t take much damage to twist a healthy prion into a zombifying pathogen. The illness just pops up.

There are some treatments, including immersing infected tissue in an ozone bath. But that won't help when the problem is literally smeared across the landscape. "You cannot treat half of the continental United States with ozone," Zabel said.

And so, to combat this many-pronged assault on our wildlife, Zabel and his colleagues are getting aggressive. They recommend a controlled burn of infected areas of national parks in Colorado and Arkansas—a pilot study to determine if fire will be enough.

"If you eliminate the plants that have prions on the surface, that would be a huge step forward," he said. "I really don’t think it’s that crazy."

[h/t The New York Times]

SECTIONS
BIG QUESTIONS
arrow
BIG QUESTIONS
SECTIONS
WEATHER WATCH
BE THE CHANGE
JOB SECRETS
QUIZZES
WORLD WAR 1
SMART SHOPPING
STONES, BONES, & WRECKS
#TBT
THE PRESIDENTS
WORDS
RETROBITUARIES