The iconic Taj Mahal is known for its perfect design, but Dr. Dilip Ahuja noticed there was a fundamental error. Did Emperor Shah Jahan know about it?The Taj Mahal. Credit: friarsbalsam/Flickr, CC BY 2.0It is said that the artists and craftsmen who built the Taj Mahal had their arms chopped off on the orders of Emperor Shah Jahan so they could never build such a structure again. The Taj Mahal is known for its perfection; Rabindranath Tagore thought it was “a tear on the cheek of time”, and for centuries the architecture of this monument has fascinated both experts and the lakhs of tourists who flock here every day. However, Dilip Ahuja, a scientist, also made a startling observation — that the monument known around the world for its perfection wasn’t actually perfect.This is the latest episode of The Intersection, a fortnightly podcast on Audiomatic. For more such podcasts visit audiomatic.in.