Error in golden ratio at exhibit? Museum now says it’s right

BOSTON (AP) — A Boston science museum that praised a teenager for catching a mistake in the golden ratio at a decades-old exhibit now says it wasn't an error after all.
The Museum of Science released a statement Tuesday afternoon saying the equation in the 34-year-old "Mathematica exhibit" with minus signs instead of plus signs is actually the "less common – but no less accurate – way to present it."