R1 — The Signal
This is the input ring. The ears. The skin. The nose. Everything that comes in before anything goes out.
Your body is an antenna. It picks up frequencies — sound waves hitting the tympanic membrane, pressure gradients on the skin, volatile molecules docking in the olfactory epithelium. All of it is signal. All of it arrives before you decide what to do with it.
R1 processes raw input. It is the sensory layer that feeds everything upstream. Before the gate (R2) decides what gets through, R1 has already heard it, felt it, smelled it. The signal is always arriving. The question is whether you are tuned to receive.
The ears are not passive. The stapedius muscle tenses to filter frequencies. The skin adapts to constant pressure and re-sensitizes to change. The nose habituates in minutes but the signal was already processed. Sensory processing is active, selective, and ancient.
p=3 because 3 is the first odd prime. The triangle. The minimum number of points to define a plane. You need three points to have a surface of perception — a sender, a medium, and a receiver. Without all three, there is no signal. There is nothing coming in.