It is Sundberg-Weitman's professional and academic experience, her expertise-knowledge on the Swedish judiciary, what makes her witnessing valuable about Marianne Ny's doings as prosecutor in the public Assange case: In judging to which extent are those public doings - as prosecutor or commenter - congruent with acceptable Swedish judiciary praxis. Whether Sundberg-Weitman is personally acquainted with Ny or personally with the case itself is downright irrelevant. And the fact that she is NOT can hardly speak against her testimony.