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@mina Ja, nee 
@mina /me holt Schokolade und testet
@robertvonherz @mina Hat super funktioniert und klappt perfekt!
Ich setze gerade eine Website mit Tutorials auf, für alle bei denen es nicht funktioniert.
Das Monatsabo wird nur 350 EUR kosten, dafür funktioniert es auch mit Goldbarren!
@mina The ultimate dream: make something out of nothing 
Can't fool me though...
I actually once met a guy who sincerely thought, he could make a living out of that if he did it with gold.
@mina That's why you should pay a little attention in math class 
Antifaschist @mina
This must be quite Impossible.
So to say with Douglas Adams: "If you've done six impossible things this morning, why not round it off with breakfast at Milliways—the Restaurant at the End of the [Fedi] Universe!"
Taken from the same named Book "The Restaurant at the Universe"
@mina a Banach Tarski bar
@tqft @mina
Adding to that (in the rare case not everyone remembered “Banach-Tarski" at once):
You actually can, mathematically proven, divide an object into (very) many (very) tiny pieces, reassemble them and – get two objects, each with the size as the initial one.
Caveat: Really many, really tiny pieces with really peculiar geometry required.
@mina this is sorcery!
@mina der sechsjährige (der noch nicht lesen kann) liegt grad neben mir.
"Mama, so schneidet man ein Stück Schokolade, dass die nie alle wird!"
OK, er hat es wohl bei der funexpected math app gelernt (super App für [Vorschul]Kinder!)
@mina
Barstad mathematicians!!¡
How long have they been keeping this from us???
@mina
You selfish, tantalising
BARSTADS!
@mina
Can you show me, tho
How to do it with cake?¿
🅻🅸🅲🅴 (
) @mina I watched this in fascination for a full minute before I realized I just want some chocolate.
@mina this is driving me bonkers. I WILL figure it out!!!! Math does not defy physics!
EDIT: I see it. It is exactly what I expected, but exceptionally well hidden. Outstanding illusion.
The thing is: The missing triangle is so tiny that, even if you do it sloppily with, say, paper and scissors, you can make it work at least once or twice.
@mina it's not the shape that makes the trick work here as much as it is the frame rate and inability to stop the animation. The brain leans INTO the illusion rather than the actuality. It doesn't want to see the individual frames and their differences.
There's actually a version with slightly different cuts which works as well, even with only two static images.
️ @mina
Das Geheimnis der heimlich größerwerdenden angeschnittenen Stücke! Meine Kristallkugel hat es enttarnt!
Verkaufst du Kugel?
@mina
Das plötzlich übrig gebliebene Extrastück ergibt sich aus den kleinen Eckchen, die unmerklich größer geschummelt werden. Gerade vor dem Andocken ist noch mal ein größerer Schnitt, der das verbirgt. Weil die Formen grob stimmen, tritt das optisch nicht ins Bewusstsein. Die Teile werden auf jeden Fall größer geschummelt. Die zerbrochenen Schokostücke gewinnen an Fläche, bzw Höhe.
Wenn man das sauber aufmalt, sieht man, wo das Stückchen herkommt.
Ist trotzdem cool, finde ich.
@mina @paulfoerster Paper, lines, scissors: then I see.
@mina @paulfoerster Really good.
I think this is how *Summer Time* (aka Daylight Savings Time) also works.