One TOK example can support more than one knowledge point, but each paragraph still needs one controlled analytical purpose.
One Example Can Support Multiple Knowledge Points
One Example, Several Angles
One TOK example can support more than one knowledge point. That does not mean you should use it everywhere. It means the value of an example depends on the claim you attach to it.
Choose the Knowledge Point
Take a case involving AI bias. One student might use it to discuss how data selection affects objectivity. Another might use it to discuss public trust in technological systems. Another might use it to compare human sciences and technology through classification. The case is the same, but the knowledge point changes.
Change the Claim
This is why you should not label an example too early. Do not write 'this is my bias example' and stop there. Ask what different TOK questions it could answer. Does it show something about evidence? Method? Perspective? Language? Values? Reliability? Once you see the possible angles, choose the one that best fits your prescribed title.