Can Someone Rig a Ghost Leg (Ladder) Draw?

Paper ladders are hard to rig

A ladder drawn on paper is close to tamper-proof because everyone is looking at the same picture. Anyone can trace a path and reach the same answer, and altering a line mid-draw is immediately obvious.

There is still one weak point. If the outcomes are written after the ladder is drawn, whoever writes them can see the connections and assign whatever they want.

So sequence matters even on paper. Write the outcomes first and hide them, then draw the ladder.

Three places an online draw could be manipulated

In an online ladder there are three theoretical points of interference. Knowing them tells you exactly what to check.

The first is generation. Rather than placing rungs randomly, they could be arranged to produce a chosen mapping. Nothing in the result alone would reveal it.

The second is display. The ladder could be generated fairly and then a different outcome shown on screen. If the animation and the announced result disagree, this is what happened.

The third is redrawing. Running it repeatedly until a preferred outcome appears leaves the algorithm untouched but still controls the result.

What a participant can verify

The most reliable check is seeing the whole ladder first. Confirming that all the rungs are already on screen before any result is traced proves the outcome was not decided afterwards.

The second is tracing a path yourself. Follow the drawn lines and confirm the endpoint matches what the tool reported, and you have ruled out display-stage interference.

The third is the number of runs. Establish in front of everyone that the first result stands, so nobody can quietly draw several times and pick one.

How this tool builds trust

The ladder here places rungs randomly first and then draws them. The ladder determines the outcome rather than the outcome determining the ladder.

Animating the path serves the same purpose. When participants can follow the route with their eyes, the display-stage gap closes.

Everything runs inside the browser. No list or result is sent to a server, so there is no external point where a result could be altered.

A running order that avoids arguments

Fix the sequence in advance. Enter and confirm participants and outcomes, share the screen, generate the ladder, then reveal results one at a time.

Where possible, let a participant press the button rather than the organiser. It is the simplest demonstration that the organiser holds no control.

Save the result as an image afterwards. It captures both the ladder shape and the connections, which answers any later question.

What is structurally impossible

The existence of weak points does not mean anything goes. No arrangement of rungs can make two participants land on the same outcome, because rungs are position swaps and swapping never breaks a one-to-one mapping.

Nor can any starting position be structurally favoured. As long as rungs are placed randomly, every starting point has the same distribution of outcomes.

Selection order is irrelevant too. Once the ladder is complete every connection is fixed, so picking first or last changes nothing about what you get.