Bertolt Meyer enlightens and disputes my post Grok:

I would contradict Jack’s original claim that two folks who collaborate well, who can finish each other’s thoughts, share a pattern language. I would say that these two individuals share a task-relevant mental model. In research, such mental models have been operationalized (measured) as knowledge networks (graphs), in line with von Rauchhaupt’s concept of a network of organized information. For example, Mathieu et. al (2000) elicited team members’ mental model with a structural knowledge elicitation technique similar to my AST.

It turned out that teams in which the resulting knwledge graphs were similar, i.e. in which mental models were similar, performance was higher.

I’d like to say I disagreed with Meyer, but he’s clearly operating on an entirely different level.