This page describes design intent and values. It does not describe system behavior or provide usage instructions.

Why this exists

I did not build FCE to monitor people. I built it to help people notice themselves clearly, voluntarily, and without judgment.

“A measurement is only ethical when the person being measured remains the primary decision-maker.”

What problem this responds to

Many systems that measure human performance are designed for institutions: to classify, to decide, to reduce liability, or to enforce compliance. Even when the intention is good, that structure can shift power away from the person whose body and mind are being measured.

At the same time, there are ordinary moments where a person genuinely needs to know: “Am I functioning like myself today?” Not as a diagnosis. Not as a legal status. As a practical self-check before something demanding.

FCE exists for that moment: to support awareness and responsibility without turning the person into a case.

Why baseline-relative measurement matters

People differ widely in reaction speed, attention style, and motor precision. Fixed thresholds flatten that diversity. They also create false confidence and false alarm.

Baseline-relative measurement asks a narrower and more honest question:

“How are you functioning today compared to your own normal range?”

FCE is not built to prove that a person is “good” or “bad.” It is built to reveal drift and support better judgment.

Why surveillance is refused

I deliberately chose not to build features that turn a self-check into a monitoring system. This is a design boundary, not a technical limitation.

I refuse:

  • background tracking without deliberate user action
  • default cloud accounts, automatic uploads, or hidden telemetry
  • third-party reporting as a built-in outcome
  • safe/unsafe or fit/unfit verdicts generated by the system
  • features that are easily repurposed for enforcement

Measurement without participation becomes surveillance. Surveillance shifts power away from the person being measured.

Refusal is protection. If FCE ever becomes a leash, it has failed its purpose.

What FCE is and is not

FCE is:

  • a voluntary functional self-check
  • baseline-relative measurement
  • privacy-first and local by default
  • designed to support human interpretation

FCE is not:

  • a medical diagnosis
  • a substance detection system
  • a legal fitness verdict
  • an enforcement mechanism
  • a replacement for professional care

FCE measures function. It does not claim to identify causes.

The awareness loop

  1. Baseline: build your normal range under typical conditions
  2. Check: compare today to your baseline
  3. Interpret: combine the result with context
  4. Act: rest, reduce load, postpone, or retest if needed

The system does not decide for you. It gives a cleaner mirror than guesswork alone while keeping judgment in human hands.

Final principle

Technology quietly teaches people what matters. FCE is built to teach one thing:

“Notice yourself clearly — then decide with care.”

If FCE ever stops supporting dignity, consent, and human judgment, it should not exist.