We close this week's AI playbook with virtual reality. VR means a world you step inside instead of look at, and the usual advice is to spend a fortune first. We are going to do the opposite. By the end of this you will know how to test a VR idea in a normal web browser, for free, before you ever buy a single headset or hire a single developer.

First, find the place that is expensive, dangerous, or far. A factory floor for training. A building that is not built yet. A clinic you cannot crowd with students. VR only earns its cost when being there in person is hard or risky. If your customer could just walk in and look, you do not need VR. Name the place that is too costly to visit, because that is the only place worth rebuilding.

Second, build the rough version on the open web. A free framework called A-Frame lets you make a walk-around 3D scene with plain HTML tags, and it runs in any browser and on a cheap headset through WebXR. You are not committing to an app store or a big engine. You are sketching the world in the same kind of code as a web page, so you can throw it away cheaply if the idea is weak.

Third, the AI tie-in. An empty 3D room is slow to fill by hand. Use a model to generate the scene description, the object layout, even the textures, then drop them into your A-Frame world. You describe the space in words, the model drafts it, and you spend your hours judging whether it feels right instead of placing every box by hand. That is the same give-it-the-words move from the whole playbook.

Our honest proof closes the week: our own front-room experiences are built to run in a plain browser first, on a normal canvas, before we ever reach for heavier tools. We test the cheap version in public and only invest more when it earns it. Same rule for your VR idea: prove it on the open web, where it costs almost nothing to be wrong, before you spend real money.

So that wraps the practical AI playbook. Virtual reality, made cheap: pick the place too costly to visit, build the rough world in the browser with A-Frame and WebXR, and let a model fill the space so you can judge instead of build. The thread all week was the same: use the new tool on purpose, on yourself first, for almost nothing. See the whole machine running in the open at office.temerarii.xyz.