precision game · one narrow clue
✂️ Cut It in Half
Begin with the same reviewed starting task used for every comparable first Persona; play this game separately below.
Capture one narrow behavioral signal before deciding what it means.
One line. Two equal halves. Sounds easy until the shapes stop being symmetrical.
What happens
A short task with a specific constraint.
A shape appears. You draw one straight line through it, trying to leave exactly half the area on each side. The backend divides the polygon along your submitted line and measures the smaller area against the 50% target.
How to play
Drag to draw a single line through the shape, anywhere and at any angle. There is no countdown or automatic submission. When you commit, the game computes the real area on each side of your line and scores how close you came to a perfect 50/50 split; its smaller speed component stops rewarding extra time after the 15-second scoring window. Rounds get harder: symmetric shapes first, then irregular polygons where the visual middle and the true middle drift apart. No signup needed to play.
What this can tell you
One clue, with a clear boundary
You place one line across a shape while balancing area accuracy against a short clock.
Repeated rounds may show how you calibrate a visual estimate and whether extra time changes its precision.
One game cannot establish your intelligence, creativity, personality, or general decision quality.
Repeated spatial games plus a self-report lens can test whether the same careful-or-quick tendency appears by another method.
How this is measured
Drag to draw a single line through the shape, anywhere and at any angle. There is no countdown or automatic submission. When you commit, the game computes the real area on each side of your line and scores how close you came to a perfect 50/50 split; its smaller speed component stops rewarding extra time after the 15-second scoring window. Rounds get harder: symmetric shapes first, then irregular polygons where the visual middle and the true middle drift apart. No signup needed to play.
Persona evidence status
This method is registered for Persona.
The reviewed Persona registry accepts completed Bisect sessions as bounded arcade evidence, with the task limitations kept alongside the signal.
Methodology: arcade:bisect:v1
If you want more depth
Understand the task before interpreting yourself.
These notes explain the game mechanics and score without turning one result into an identity claim.
What can change the result
Polygon shape, screen size, input device, motor control, practice, and the speed-scoring window can all change your line. That is why the result stays a task-level observation rather than a diagnosis or broad ability score.
How to read the score
A higher score means a smaller area-split error in these rounds. The current score combines 80% precision and 20% speed. It is not a population percentile, and Second Vision does not publish a good-or-bad threshold.
Add another angle
Test whether the clue travels.
A complementary method is more useful than replaying the same interpretation in different words.
Common questions
About Cut It in Half
Rules, scoring, and practical details live here after the evidence boundary is clear.
Frequently Asked Questions
What does cutting shapes in half actually test?
It records area-estimation error in this task, not geometry knowledge or a broad ability. Repeated rounds also show whether extra time changes that error.
How do you split a shape into two equal areas?
Any straight line that leaves 50% of the area on each side works. There are infinitely many correct cuts through every shape, at every angle. The game scores the area balance of your line, not whether you found some single official answer.
How is scoring calculated?
The game computes the exact area on each side of your line. A perfect 50/50 split scores 100; the score falls as the split gets more lopsided. Faster answers earn a speed bonus, so a quick 90 can beat a slow 95.
Is it free? Do I need an account?
Free, in the browser, no signup. Creating an account afterwards saves the run as one clue in your evolving Persona.
Why do I keep cutting toward the same side?
A repeated direction is worth noticing, but it can reflect the shapes, screen, input method, practice, or your approach in this task. Repetition across independently generated rounds makes it a question to test, not a stable trait by itself.