When Evidence Settles an Argument

Two coworkers argue about whether the deadline was missed. They go back and forth for ten minutes. Then someone pulls up the timestamp, and the argument ends in a single second. You have watched this happen, and you have also watched the opposite: a dispute that grinds on for months because the thing that would settle it does not exist.

This lesson teaches you what separates the two. You will learn what evidence actually is, why some evidence carries far more weight than other evidence, and how to judge any account by how close it stands to the event and whose interests it serves. You will also learn the three ways testimony quietly decays between what a person saw and what he says, and the exact questions that repair each one. By the end you can take any claim apart and see precisely where it is strong and where it is hollow.

The lesson completes a framework the course has been assembling. The full structure, and the practice that installs it, waits inside.