Common builder mistakes

Most Logic Builder problems come from incomplete structure, not from complicated bugs.

Common mistakes

More than one Start node

Use one clear entry point. Multiple starts make the flow harder to interpret and may break validation.

Unconnected nodes

If a node sits alone on the canvas, the system cannot treat it as part of the active flow.

Empty Decision questions

A Decision node needs a real question. If the question is blank, the branch logic has no clear meaning.

Missing Yes or No branch

A Decision node is incomplete if only one side is connected.

No reachable End

If a learner builds a path but never gives it a real ending, simulation cannot treat the flow as complete.

Reachable dead-end path

Sometimes a branch is connected enough to be reachable, but it still stops without a valid next step or end. That is a structure problem even if the canvas looks mostly complete.

Trying to test too much at once

If you build a large flow immediately, it becomes harder to know which part caused the failure.

Best recovery sequence

1. Return to the smallest valid version of the flow.
2. Check the Start node count.
3. Check every connection.
4. Check every Decision question.
5. Check that each branch can reach an End.
6. Run again.

Good learner habit

Save a clean simple flow before expanding it. That way, if a later change breaks the logic, you still have a stable version to reload and compare against.