Our dad used to ponder that over 200 years after Benjamin Franklin tinkered with and wore spectacles to sharpen his vision, we humans are still wearing glasses - of varied sizes, materials, shapes of frames and formulae for the lenses. 'Shouldn't we have come up with some new and improved invention by now?' he asked. I look around the library where more than half of the patrons and staff are wearing lenses perched upon our noses, earpieces clasping our tender ears, and wonder the same.