The PlainLogic lab

Five labs. Press Run.

Each lab is a working system, not a slideshow: open one, press Run, and watch the idea move across the diagram. No accounts, no installs — free to use today.

Start with the AI Lab

How a lab works

Three steps, every time

Step 1

Open a lab

Pick the system you want to understand: AI, networks, data pipelines, automation, or servers.

Step 2

Press Run

Every lab has controls. Change the inputs and run it again — the system responds like the real thing.

Step 3

Watch what moves

Data, packets, and requests travel across the diagram with labels, so you see the idea working, not just read about it.

The benches

Pick a lab

Every lab teaches one real concept by letting you run it. Start anywhere — they do not depend on each other.

Lesson · AI systems

AI Lab

Learn how AI works: press Run on the LLM, RAG, and agent flows and watch the three ideas behind modern AI move across the diagram. Includes eight plain-language concept guides.

Lesson · Networking

Network Lab

Learn how the internet moves data: packets, routes, retries, and latency, animated as requests travel across a simulated network.

Lesson · ETL

Data Pipeline Lab

Learn ETL the honest way: extract raw data, transform it into something usable, load it somewhere it belongs — watch each stage fire.

Lesson · Workflows

Automation Lab

Learn workflows and automation: chains of steps that run on their own, with the triggers, conditions, and failure handling that real automation needs.

Lesson · Operations

Server Room

Learn how servers stay up: health checks, load, failover, and the monitoring that tells you something is wrong before your users do.

The demos are simplified educational visualizations — they teach the shape of each idea, labeled as such. Prefer reading first? Learn explains the same concepts in plain words.

Keep exploring

Beyond the labs

Flagship

Situation Room

The live-data console: weather, alerts, earthquakes, water, and tides on one map — the lab's flagship, running on real public APIs.

Learn

Learn the ideas in plain words

Concepts, step-by-step guides, and honest notes on how this site itself gets built — the reading shelf behind the labs.