Jackson Arn
Art critic, The New Yorker (successor to Peter Schjeldahl)
That is formalist criticism at its sharpest: he is talking about how the work works, not what it represents or who made it. He is mid-career and newly in one of the most prestigious critical roles in America — which means he is actively building his identity and reputation, and a well-framed international invitation could interest him precisely because it's not the usual New York circuit.
Why he fits: Schjeldahl's entire practice was about the aesthetic experience of threshold — standing in front of something and asking what it does to you. Arn is continuing that tradition. He would understand the exhibition's premise immediately.
How to reach him: Through The New Yorker editorial contacts, or through his earlier work at Art in America where he built his byline.