ELI5 Explain Like I'm 5: Bite sized answers to stuff you should know about - in a mini podcast

Latest Episodes:

ELI5 QR Codes - how do they work even with portions covered or obscured? Oct 11, 2024

Show notes

How are QR Codes better than regular barcodes? How do they work? The fourth corner square is kinda important - what kind of processing is going on for a QR code to be decoded? Why is error correction so important in QR codes?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: puppett_master, berael, middlefingerin, jagedmetalos, superpansy, simbonegtp and jcdu

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ELI5 Dyson Sphere - did aliens already build one? Oct 04, 2024

Show notes

What exactly is a Dyson Sphere? What materials would be required? What is a Dyson Swarm and a Dyson Bubble? Could any other civilizations have built a dyson sphere already?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: apprehensivemedia999, loki-l, kriss3d and joushmark

To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter:

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ELI5 Skyscrapers - which NYC skyscraper could have fallen over? Sep 27, 2024

Show notes

Are the 100+ year old skyscrapers still safe? How do skyscrapers get built straight up without any leaning or imperfections or off angle walls? How does the concrete get poured so perfectly? How have designs changed over the years? What NYC had a 6% chance of falling in any given year?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: troyisawinner, justasking1t, johnproof, monkshabit, torostein, hopefulmonstr, hippityhoppityboop, flannelheart and krisalyssa

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ELI5 Super Mario Bros - how did it fit into 32KB? Sep 20, 2024

Show notes

How did Shigeru Miyamoto come up with Mario, and how has this character evolved over the years? How is it that the first Mario Bros. game was about 32kb, but a JPEG of the game is over 300kbs in 2023? What made the game mechanics so special? Why is the first level of Super Mario still studied today? Who is the real-life Mario that the character is named after?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: mrblackops16, sneaky_gopher, displacedpie, grumblyoldman, summerandtinkles and mrdrofficer

To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter:

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ELI5 Lie Detector Tests - how do polygraph tests work? Sep 13, 2024

Show notes

How does a lie detector test work? If people don’t trust their accuracy, why do agencies like the FBI and CIA still use polygraph tests? How is a polygraph test actually conducted? Are there any proven methods or techniques to "beat" a polygraph test?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: amainterrogator, rhomboidus, slightydamp_clothes, jetscootr, happy_bridge, baliflipper,jarljam and antechronos

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ELI5 Solar Eclipses - how often do they occur? Sep 07, 2024

Show notes

Why does the moon perfectly cover the sun during a total solar eclipse? What's the difference between total, partial, and annular solar eclipses? It’s dangerous to look at the sun during a solar eclipse without proper protection, but is it more dangerous than staring directly at the sun when there isn’t an eclipse? How frequently do we get solar eclipses?Any tips for those wanting to photograph or view an eclipse?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: nolablue1024, troldann, lowtoiletsitter, antilokhos, thejeeronian, moonlightvenator, markydsade, csklmf86, blakeh95 and transparent_gilas

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ELI5 Donor Organs - do donor organs age according to the donor’s age or the new host’s age? Aug 30, 2024

Show notes

If all the cells in a person’s body have their individual DNA imprinted in them, then what happens after an organ transplant? Does the organ eventually adapt the DNA of the recipient or is the donor’s DNA permanently a part of the recipient? Do donated organs age according to the donor´s age or do they adapt to the age of the new body? Why do some countries have much higher percentages of people donating their organs compared to others?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: toitsExersNexqr, myxomatosis8, lazyfiish, lolziminreddit, tampeiter and suckatyourjob

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ELI5 Prime Numbers - why isn’t 1 a prime number? Aug 23, 2024

Show notes

What are the two reasons that 1 is not classified as a prime number? How did the definition of prime numbers evolve? What is Euclid’s theorem and how does it relate to prime numbers? Explain the Twin Prime Conjecture. How do prime numbers play a crucial role in encryption methods, especially in securing digital communication?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: hypertinks, jamcdonald120, viskerratio, vladdy-the-impaler, frostyfingertips and functor7

To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter:

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ELI5 Burping - how loud was the world loudest burp? Aug 16, 2024

Show notes

What exactly causes a burp, and why does it happen? How do cows and their burps play a role in greenhouse gas emissions? When they say “livestock are responsible for burping the methane equivalent of 3.1 gigatonnes of carbon dioxide into the atmosphere annually" what does the methane equivalent of CO2 mean? Where was the world’s loudest burp recorded?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: yeetonem, purehatred89, insane_eraser, shakeshuka, mmmmmmbacon12345, bishopdamage, creasedjaw and rudimentarysasquatch

To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter:

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ELI5 Yawning - why is it contagious? Aug 09, 2024

Show notes

Why do we feel the urge to yawn just by seeing or hearing someone else do it? Do animals yawn? Why do we yawn when bored or tired? Is the oxygen explanation a myth? Why does everything sound muffled when I yawn? Why do I tear up when I yawn?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: rhapsodysparkles, stonefan, fireindeedhot, sleozz, leafmeb, greshirtbrownguy, duzzeno and fendrbud

To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter:

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or send us an e-mail:

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