Narrated diagrams
Every one of these plays itself back, step by step, with a studio voice explaining what is happening and why. Read them here or press Present to watch.
processmapA CI/CD pipeline, stage by stageOne saved change walks the whole road from a developer's laptop to production — hooks, build, tests, scans, staging, atimelineA short history of the internetFrom four university computers to five billion people — the ten moments that built the connected world, narrated.timelineAncient Egypt, a timelineThree thousand years of pharaohs in twelve dated moments — from the first farmers on the Nile mud to the pyramids, HatarchitectureCaching, from browser to databaseSix layers of cache stand between a click and a disk: the browser, the edge, the gateway, the app, Redis and the buffeconceptmapCloud computing: IaaS, PaaS and SaaSStart in your own server room, then climb the ladder — infrastructure, platform, software and serverless — with a realarchitectureContainers and Docker, explainedFrom a twenty line recipe to an identical process running on any machine on earth — images, layers, registries, isolatconceptmapFood chains and food websFrom sunlight to grass to grasshopper to hawk, then back to the soil through the decomposers — why only a tenth of theusecaseFood delivery app — who can do whatCustomers, couriers, restaurants and support — every actor and capability of a delivery platform, narrated.conceptmapFractions, explainedNumerator, denominator, unit fractions, equivalents, simplifying, common denominators, adding and comparing, improper statemachineGit: where your changes actually liveUntracked, ignored, staged, committed, stashed, pushed, merged — every state a file passes through in Git, and the exaarchitectureHow ChatGPT answers a questionThe full path of a single prompt — tokenizer, embeddings, attention, the transformer stack, sampling and safety — narrnetworkHow DNS finds a websiteThe internet's phone book, walked end to end: your own caches, the resolver that does the legwork, the root and dot codataflowHow HTTPS keeps you safeTwo machines that have never met agree on a secret while everyone is listening. The certificate, the chain of trust, tprocessmapHow a Bitcoin transaction worksFollow one payment from a private key to final settlement — signing, broadcast, the mempool, the mining lottery, and wprocessmapHow a Scrum sprint runsTwo weeks in the life of a Scrum team — backlog, refinement, planning, the daily standup, the work itself, the review,architectureHow a URL shortener worksThe classic system-design interview favorite — clients, API, cache, database and analytics — explained step by step wiprocessmapHow a bill becomes a lawThe obstacle course an idea runs through the United States Congress — sponsors, committees, floor votes, the second chstatemachineHow a computer starts upThe relay race between pressing the power button and seeing your desktop — power good, self test, firmware, boot loadeprocessmapHow a machine learning model is trainedThe real pipeline behind a working model — collecting and cleaning data, splitting it honestly, training, tuning, testconceptmapHow a neural network learnsFrom a single neuron to backpropagation and epochs — the ideas behind machine learning, narrated one concept at a timeprocessmapHow a volcano eruptsThe full chain from a sinking tectonic plate to an ash cloud in the stratosphere — why rock melts, why gas is the realnetworkHow an electric circuit worksBattery, wires, switch, bulb and resistor drawn as one unbroken loop — voltage, current and resistance explained, sericonceptmapHow animals are classifiedBackbone or no backbone, and then the five classes of vertebrate — fish, amphibians, reptiles, birds and mammals — witprocessmapHow coffee gets from farm to cupFollow a coffee bean from a hillside farm through harvest, processing, roasting and brewing — a fully narrated walkthrdataflowHow passwords are stored safelyA properly built system never writes down the password you typed. Salt, deliberately slow hashing, the login check thaprocessmapHow to write an essayThe whole route from a blank page to a finished essay — unpacking the prompt, building a thesis, arguing in paragraphsarchitectureHow websites handle millions of usersOne server, then a bigger server, then a load balancer, health checks, stateless replicas, queues, replicas, a CDN andprocessmapHow you breatheOne breath, followed all the way from the muscle that starts it to the three hundred million air sacs where oxygen slidataflowHow your heart pumps bloodOne loop of blood traced through four chambers, four valves and two separate circuits, from the tissues that used it uarchitectureKubernetes, explained simplyYou describe what you want; a stubborn loop makes it true. Pods, nodes, deployments, the scheduler, services and self conceptmapLayers of the EarthFrom the thin rock under your feet to a ball of solid iron as hot as the Sun's surface — every layer of the planet, wistatemachineLife cycle of a butterflyEgg, caterpillar, chrysalis, butterfly — the full loop, including the moults nobody mentions and the ten days when thestatemachineLife cycle of a frogSpawn to tadpole to frog — gills swapped for lungs, a tail eaten from the inside, and front legs that arrive overnightarchitectureMonolith vs microservicesOne deployable or many? Walk from a happy monolith to a gateway, per service databases and an event bus, counting the conceptmapParts of a plantRoots, stem, leaves, flower, fruit and seed — every part of a plant and the job it actually does, narrated from the sostatemachinePhases of the MoonAll eight phases laid out as the circle they really are, plus eclipses, supermoons and earthshine — and why the whole processmapPhotosynthesis, step by stepHow a leaf turns sunlight, water and air into food and the oxygen you are breathing right now — narrated step by step.dataflowPublic key cryptography, explainedTwo keys instead of one: how strangers agree on a secret over a wire everyone can read, how signatures prove who wroteconceptmapSQL JOINs explainedInner, left, right, full outer, cross and self joins, mapped by the only question that matters: which rows survive wheerdiagramSchool database, explainedStudents, teachers, classes, enrollments and grades — a classic relational design, narrated table by table.decisiontreeShould I buy it? A smart-spending guideA kid-friendly decision tree for pocket money — wants versus needs, waiting rules, and saving up, fully narrated.dataflowSign in with Google, explainedOne button, a carefully choreographed round trip. Follow the OAuth authorization code flow all the way to the tokens, statemachineSolid, liquid, gas: states of matterFour states and every transition between them — melting, evaporating, boiling, condensing, freezing, subliming, deposidecisiontreeStaying safe onlineFive moments that catch kids out online — a stranger's message, a free prize, a password request, oversharing and crueconceptmapThe OSI model, layer by layerSeven layers from voltage to video call, each with the real hardware and real protocols that live there — and why engiconceptmapThe Solar SystemOne star, eight planets, a belt of leftover rubble and a cloud of ice at the edge — a narrated tour of the whole neighmindmapThe Water CycleHow the same water travels between ocean, sky and land forever — a narrated science mind map.processmapThe journey of your foodFollow one mouthful from your teeth to the far end of a nine metre tube, through acid, bile and thirty square metres otimelineThe race to spaceSixty five years of leaving the planet — Sputnik, Gagarin, Apollo, the Voyagers, Hubble, the space station, Mars roverstatemachineThe rock cycleMagma to granite to sand to sandstone to slate and back to magma — the loop that has been recycling the same rock for processmapThe scientific methodFrom a stubborn question to a result other people can trust — hypotheses, controls, statistics, peer review and the loconceptmapThe six simple machinesLever, wheel and axle, pulley, ramp, wedge and screw — the six shapes that trade distance for strength, the bargain bestatemachineTraffic light with pedestrian crossingRed, green, amber — plus the button that actually does something. A narrated state machine everyone has met.dataflowWhat happens when you open a websiteThe half second between pressing enter and seeing a page, unpacked hop by hop: name lookup, connection, encryption, redataflowWhat happens when you run a SQL queryOne line of SQL becomes a parse tree, a costed plan, an index scan or a full sweep, and a stream of pages through the dataflowWhat happens when you tap to payThe two seconds between tapping your card and the terminal beeping — every hop of the data, narrated.architectureWhat is an API?Follow one weather request from a phone to a database and back, and watch the restaurant analogy turn into real endpoiprocessmapWhere your recycling really goesFollow one bottle from the kitchen bin through magnets, eddy currents, infrared scanners and a global commodity marketorgchartWho makes a movie? The crew, explainedDirector, producers, camera, sound, art and editorial — how a film crew is really organized, narrated role by role.processmapWhy we have seasonsIt is not distance. Follow one stubborn tilt of twenty three and a half degrees around a whole orbit and watch summer,