Category Archives: Interest

Organizing Teams With Collective Fictions

There is often an observable difference between what is considered the right thing to do, and what actually is being done.

Terry Pratchett said it best when he made Death declare mercy and justice nonexistent: “TAKE THE UNIVERSE AND GRIND IT DOWN TO THE FINEST POWDER AND SIEVE IT THROUGH THE FINEST SIEVE AND THEN SHOW ME ONE ATOM OF JUSTICE, ONE MOLECULE OF MERCY.” (Note that Death is not shouting, he simply speaks upper case.)

We can’t measure justice and mercy. These are collective fictions — things we agree to believe to enable us to get along — and …read more

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Posted in discussion, Featured, Interest, organization, Original Art, Software Development, work | Leave a comment

Shockingly, DARPA’s Brain Stimulator Might Not be Complete Nonsense

Where does your mind jump when you hear the mention of electroshock therapy? The use of electrical current to treat various medical conditions has a long and controversial history. Our fascination with the medical applications of electricity have produced everything from the most alarming of patent medicines to life-saving devices like pacemakers and the Automatic External Defibrillator.

The oldest reference I could find is the use of the torpedo fish to allegedly cure headaches, gout, and so on in 43 CE. Incidentally, Torpedo torpedo is an awesome species name.

Much more recently, there has been interest in transcranial direct current …read more

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How Pure is this Cup of Joe? Coffee, Conspiracy, and Citizen Science

Have you ever thought about coffee purity? It’s more something you’d encounter with prescription or elicit drugs, but coffee is actually a rather valuable commodity. If a seller can make the actual grounds go a bit further by stretching the brew with alternative ingredients there becomes an incentive to cheat.

If this sounds like the stuff rumors are made of, that’s because it is! Here in Ho Chi Minh City there are age-old rumors a coffee syndicate that masterfully passes off adulterated product as pure, high-grade coffee. Rumors are one thing, but the local media started picking up on these …read more

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Posted in artificial flavor, Chemistry, chemistry hacks, coffee, Featured, Ho Chi Minh City, Interest, purity, titration | Leave a comment

Yellowing: the Plastic Equivalent of a Sunburn

Your fancy white electronic brick of consumer electronics started off white, but after some time it yellowed and became brittle. This shouldn’t have happened; plastic is supposed to last forever. It turns out that plastic enclosures are vulnerable to the same things as skin, and the effects are similar. Whey they are stared at by the sun, the damage is done even though it might not be visible to you for quite some time.

Photodegradation

Photodegradation is nature’s way of saying you should be playing more video games indoors instead of being outside. The process is complicated and full of …read more

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Posted in Chemistry, chemistry hacks, classic hacks, Featured, hydrogen peroxide, Interest, plastic, restoration, retr0brite, retrobright, vintage, yellow plastic | Leave a comment

Beyond Conway: Cellular Automata from All Walks of Life

There’s a time in every geek’s development when they learn of Conway’s Game of Life. This is usually followed by an afternoon spent on discovering that the standard rule set has been chosen because most of the others just don’t do interesting things, and that every idea you have has already been implemented. Often enough this episode is then remembered as ‘having learned about cellular automata’ (CA). While important, the Game of Life is not the only CA out there and it’s not even the first. The story starts decades before Life’s publication in 1970 in a place where a …read more

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Posted in cellular automata, computing history, conway, Featured, Interest, Original Art, von neumann, Wolfram | Leave a comment

Coffee, Conspiracy, and Citizen Science: An Introduction to Iodometry

I take coffee very seriously. It’s probably the most important meal of the day, and apparently the largest overall dietary source of antioxidants in the United States of America. Regardless of whether you believe antioxidants have a health effect (I’m skeptical), that’s interesting!

Unfortunately, industrially roasted and ground coffee is sometimes adulterated with a variety of unwanted ‘other stuff’: corn, soybeans, wheat husks, etc. Across Southeast Asia, there’s a lot of concern over food adulteration and safety in general, as the cost-driven nature of the market pushes a minority of vendors to dishonest business practices. Here in Vietnam, one of …read more

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Posted in analytical chemistry, chemistry hacks, coffee, Hackaday Columns, health, home hacks, Interest, iodometry | Leave a comment

Surfboard Industry Wipes Out, Innovation Soon Follows

For decades, Gordon Clark and his company Clark Foam held an almost complete monopoly on the surfboard blank market. “Blanks” are pieces of foam with reinforcing wood strips (called “stringers”) in a rough surfboard shape that board manufacturers use to make a finished product, and Clark sold almost every single one of these board manufacturers their starting templates in the form of these blanks. Due to environmental costs, Clark suddenly shuttered his business in 2005 with virtually no warning. After a brief panic in the board shaping industry, and a temporary skyrocketing in price of the remaining blanks in existence, …read more

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Reverse Polish Notation and its Mildly Confusing Elegance

The best rummage sale purchase I ever made was a piece of hardware that used Reverse Polish Notation. I know what you’re thinking… RPN sounds like a sales gimmick and I got taken for a fool. But I assure you it’s not only real, but a true gem in the evolution of computing.

Sometime in the 1980s when I was a spotty teen, I picked up a calculator at a rummage sale. Protected by a smart plastic case, it was a pretty good condition Sinclair Scientific that turned out when I got it home to have 1975 date codes on …read more

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Posted in classic hacks, Hackaday Columns, Interest, Jan Łukasiewicz, math, RPN, RPN calculator, sinclair scientific | Leave a comment

What Makes A Hacker

I think I can sum up the difference between those of us who regularly visit Hackaday and the world of non-hackers. As a case study, here is a story about how necessity is the mother of invention and the people who invent.

Hackaday has overlap with sites like Pinterest and Instructables but there is one vital difference, we choose to create something new and beautiful with the materials at hand. Often these tools and techniques are very simple. We look to make things elegant by reducing the unnecessary clutter, not adding glitter. If something could be built with a 555 …read more

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Posted in automobile, car hacks, cars, driving, Featured, Interest, obstruction, Original Art, sunglasses, trucks, vision | Leave a comment

Artificial Intelligence at the Top of a Professional Sport

The lights dim and the music swells as an elite competitor in a silk robe passes through a cheering crowd to take the ring. It’s a blueprint familiar to boxing, only this pugilist won’t be throwing punches.

OpenAI created an AI bot that has beaten the best players in the world at this year’s International championship. The International is an esports competition held annually for Dota 2, one of the most competitive multiplayer online battle arena (MOBA) games.

Each match of the International consists of two 5-player teams competing against each other for 35-45 minutes. In layman’s terms, it is …read more

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Posted in ai, competition, Current Events, dota2, Elon Musk, esport, Featured, Interest, machine learning, neural network, news, openai, Original Art, Software Development, video game | Leave a comment