structurally correct

Mr. Bogle had hoped that the Vanguard model — “structurally correct, mathematically correct and ethically correct” — would goad other investment firms to give customers a fairer shake.

A small second-floor gallery overlooking the grand staircase has a display of extraordinary, masterpiece-quality, structurally correct architectural models — miniature basilicas, foot-high Brancusi-like staircases to nowhere, to heaven — donated to the museum in 2007 by Clare and Eugene Thaw.

His characters are structurally correct, the perspective of their situations perfect to a fault.