How do large language models work? At the bottom of every chatbot reply sits one repeated operation: guess the next token. A token is a chunk of text — usually a word piece, sometimes a whole short word, sometimes a single character. The model scores every token in its vocabulary, picks one, attaches it to … Read more
What is quantum computing? It is computing that uses quantum states — superposition, entanglement, interference — to process information in ways classical bits cannot. The honest framing matters here, because the popular coverage wildly overstates it: a quantum computer is not a faster version of your laptop. It is a different kind of machine that … Read more
How do search engines work? Three stages, executed continuously at absurd scale: crawl the web, index what was found, then rank the matches for your query. Critically, you are not searching the live web — you are searching a stored copy that a crawler built, which is why new pages do not appear instantly. Stage … Read more
What is an algorithm? A finite sequence of unambiguous steps that takes an input and produces an output. That is it. A recipe is an algorithm. So is the long division you learned in school, and so is the procedure for sorting a deck of cards. The word sounds intimidating because it gets used loosely … Read more
How does GPS work? Your phone receives radio signals from several satellites, each one stamped with the exact time it was sent. Compare send time to receive time, multiply by the speed of light, and you know how far away each satellite is. Do that with enough satellites and there is only one point on … Read more
What is a neural network? Strip away the brain metaphor and it is a stack of layers doing arithmetic, where each layer passes numbers to the next, and every connection has a weight that gets adjusted during training. That is genuinely the whole idea. The name is a loose analogy to neurons, not a description … Read more