# Correcting a system with imperfect correctors

ID: correctors-that-also-drift
Canonical: https://rezonansapp.com/nodes/correctors-that-also-drift
Version: 1
SHA256: a0ea7487653d79d23bf6bd227ff684c3d2b9e420417c564c839f8fcac194218b
Epistemic kind: reconstruction

## Question

How can an analog system correct its own error when correction components also drift?

## Formulation

An analog signal is proposed to feed both processing and compensating paths. Because the correcting components also accumulate error, a finite practical cascade needs a stopping criterion.

## Tension

Correcting a corrector repeats the original problem at another level.

## Challenge

What bound on residual error justifies stopping after a finite number of stages?