Even a 32nd of an inch would be noticeable. People would catch their feet. I wanted my work to be invisible. It's not meant to be noticed. It's supposed to serve us and support us without being seen.
Floors are flat.
Rooms are dry and cool. Cars start up and take us where we want to go. Our hearts beat, our eyes collect light, our ears hear, our tongues wag, and our stomachs churn. All these things work without us noticing them. In fact we usually notice them only when they STOP working.