Assumptions can cause investigators to reach unproven conclusions.

But investigators often make assumptions without even knowing that they were assuming.

So how do you stop assumptions in their tracks?

When you are drawing your SnapCharT®, you need to ask yourself …

How do I know that?

If you have two ways to verify an Event or a Condition, you probably have a FACT.

But if you have no ways to prove something … you have an assumption.

What if you only have one source of information? You have to evaluate the quality of the source.

What if one eye witness told you the information? Probably you should still consider it an assumption. Can you find physical evidence that provides a second source?

What if you just have one piece of physical evidence? You need to ask how certain you are that this piece of physical evidence can only have one meaning or one cause.

Dashed Boxes

Everything that can’t be proven to be a fact should be in a dashed box or dashed oval on your SnapCharT®. And on the boxes or ovals that you are certain about? List your evidence that proves they are facts.

Now you have stopped assumptions in their tracks!