For “G,” João Tabarra’s most ambitious solo show to date, the artist’s dealer, Graça Brandão, joined forces with a well-known Lisbon independent space. The exhibition comprised nineteen new works—fourteen videos, a two-channel slide projection, and four photographs—that constitute a panorama of Tabarra’s present practice. The exhibition’s title refers to the gravitational constant, one of the most difficult values in physics to measure; although it appears in both Newton’s law of gravitation and Einstein’s theory of relativity, it remains imprecise to this day. Calling attention to this unresolved