Why 2D Prototypes Fail in 3D

You cannot accurately user-test a spatial app by showing someone a flat Figma prototype on a laptop screen. The ergonomics, the scale, and the neck strain cannot be simulated in 2D.

If you design a beautiful 3D dashboard on your Macbook, you might put the headset on and realize the buttons are the size of a building, and the text requires you to break your neck to read it.