Does ‘Avengers 4′ tease mark the peak of Marvel Studios’ powers?

Mark the calendar: On Sept. 19, the day after Marvel Studios released the first trailer for Captain Marvel, the Russo brothers finally proved, once and for all, that Marvel is at the peak of its powers with the photographic equivalent of Schrodinger’s cat.

In a tweet that has already been liked more than 20,000 times, the Russos posted a black-and-white photo that appears to show Joe Russo sitting in a chair looking at a laptop in a soundstage. “Look hard…” teases the caption — and the internet was all too eager to oblige.