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Quick tech-history facts, build-in-public stories, and practical guides on apps and AI. Everything from the Built by Buit channel, all in one spot.

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What does 'PDF' actually stand for?What does 'PDF' actually stand for?What does 'SIM' in SIM card actually stand for?What does 'SIM' in SIM card actually stand for?Why does email have a 'CC' line?Why does email have a 'CC' line?Did a 1940s movie star help invent WiFi?Did a 1940s movie star help invent WiFi?Why does your WiFi fight with your microwave?Why does your WiFi fight with your microwave?WiFi came from a failed hunt for black holesWiFi came from a failed hunt for black holesWhy is it called a 'podcast'?Why is it called a 'podcast'?Did you know 'laser' is secretly an acronym?Did you know 'laser' is secretly an acronym?Where is 'the cloud' actually?Where is 'the cloud' actually?Is it pronounced GIF or JIF?Is it pronounced GIF or JIF?What is the # symbol actually called?What is the # symbol actually called?I Almost Automated the Wrong ThingI Almost Automated the Wrong ThingI Rebuilt This Report by Hand Every WeekI Rebuilt This Report by Hand Every WeekI Almost Paid for a CRM I Didn't NeedI Almost Paid for a CRM I Didn't NeedWhy does the whole internet rely on just 13 servers?Why does the whole internet rely on just 13 servers?Did a weaving machine invent the computer?Did a weaving machine invent the computer?Who wrote the world's first computer program?Who wrote the world's first computer program?Why were the first 'computers' people, not machines?Why were the first 'computers' people, not machines?Why is it called 'cut and paste'?Why is it called 'cut and paste'?Why do we call it 'booting up' a computer?Why do we call it 'booting up' a computer?Why do web addresses start with www?Why do web addresses start with www?Why are website cookies called cookies?Why are website cookies called cookies?Why is junk email called spam?Why is junk email called spam?Why does USB never plug in on the first try?Why does USB never plug in on the first try?Why does the save icon still look like that?Why does the save icon still look like that?I Tried to Build Everything. Here's What Actually Worked.I Tried to Build Everything. Here's What Actually Worked.What was the first .com website ever?What was the first .com website ever?Why is Java called Java?Why is Java called Java?Why is Wikipedia called a wiki?Why is Wikipedia called a wiki?Why did 'computer' used to be a job title?Why did 'computer' used to be a job title?Why did the first neural network have physical knobs?Why did the first neural network have physical knobs?This $10B space telescope is slower than a 1997 PCThis $10B space telescope is slower than a 1997 PCHow much did the world's first hard drive weigh?How much did the world's first hard drive weigh?The internet doesn't actually go through spaceThe internet doesn't actually go through spaceYour earbuds' icon is a dead Viking king's initialsYour earbuds' icon is a dead Viking king's initialsWhat did Nintendo make before video games?What did Nintendo make before video games?Where does the word 'robot' actually come from?Where does the word 'robot' actually come from?Why is the @ symbol in every email address?Why is the @ symbol in every email address?Why had the first big AI never heard of COVID?Why had the first big AI never heard of COVID?What does WiFi actually stand for?What does WiFi actually stand for?Why is Google spelled the way it is?Why is Google spelled the way it is?Why do power users never touch the arrow keys?Why do power users never touch the arrow keys?Why is your phone's battery percentage a lie?Why is your phone's battery percentage a lie?A software 'patch' was once an actual piece of tapeA software 'patch' was once an actual piece of tapeYour power button is secretly a 1 and a 0Your power button is secretly a 1 and a 0Why is your computer mouse called a mouseWhy is your computer mouse called a mouseThe QWERTY keyboard was NOT designed to slow typists downThe QWERTY keyboard was NOT designed to slow typists down5 Tech Facts That Sound Fake (But Are True)5 Tech Facts That Sound Fake (But Are True)