Everyone in this profession knows the ceiling. Practice fast enough to make errors and you encode them. The brain strengthens whatever pathway it uses most — correct or not — and calls it learned. Practice sloppy and you build a faster way to miss. That warning is intuitive.

What nobody told you is that there’s a floor.

Here’s the mechanism that defines both limits.

Steno strokes are ballistic movements. Fast enough, and the brain stops monitoring mid-execution. It issues the entire stroke as a single pre-programmed chunk — fingers, timing, pressure — before the movement begins. This is feedforward control. The brain plans the complete stroke, fires it, and the hands execute. There is no mid-stroke correction because there is no mid-stroke supervision. The stroke runs on its own.

Slow down past a certain point and that architecture collapses. The brain abandons the pre-programmed chunk and reverts to feedback control — monitoring each finger, consciously guiding the movement, assembling the stroke piece by piece in real time. The fingers land in roughly the right places. The output looks similar. But the underlying process is completely different.

And the nervous system adapts specifically to what it practices.

Researchers Verwey and Dronkers demonstrated this directly. Motor chunks learned at one execution rate cannot be used at a substantially different rate. Participants who practiced sequences at slow rates developed representations that were useless when tested at fast rates — and vice versa. The skill is execution-rate specific. Slow practice below the feedforward threshold doesn’t just build slow skill. It builds a skill your hands won’t recognize when the speed comes back. Those hours don’t transfer. They don’t even carry over. The nervous system treats them as a different task entirely.

This means the productive practice zone is bounded on both sides.

The ceiling is the speed at which errors begin. Above it, the brain strengthens the wrong pathway and calls it learned. That limit is intuitive. Every reporter understands it even if they’ve never had a name for it.

The floor is the speed at which the stroke still feels like a steno stroke — same fingers, same timing relationships, same uninterrupted ballistic execution. It isn’t a fixed percentage of your maximum speed. It isn’t a metronome setting or a words-per-minute target any teacher can hand you. It’s a threshold you can feel.

The moment practice speed causes you to pause mid-stroke, consciously plan individual keys, or alter how you’re fingering the outline, you’ve crossed it. You’re no longer practicing steno. You’re practicing a consciously assembled approximation of steno that your nervous system will not recognize when the speed comes back.

Inside the productive zone — fast enough for feedforward control, slow enough for clean execution — every repetition builds the right pathway. Above the ceiling, you’re encoding errors. Below the floor, you’re encoding a different skill.

Two limits. One is intuitive. The other has been costing reporters thousands of practice hours without anyone naming it.

If you’re thinking about your fingers mid-stroke, you’ve crossed the floor and you’re training the wrong thing.

Tom Fernicola has been a court reporter for 37 years, specializing in complex litigation in New York City. He is the creator of BREVITY, a stenographic writing system built around cognitive load science, and the author of two books: BREVITY: Write Simply and The Science of Steno: Why Court Reporting Is So Hard — and What the Math Proves. Both are available at brevitysteno.com.