Why Indian thought never progressed into Science & Engineering

"Philosophy suffered a setback because of the transcendentalism resulting from the search of the essential unity of things.Kalupahana explains further that reality was simply considered to be beyond space, time, change, and causality. This caused change to be a mere matter of words, nothing but a name and due to this, metaphysical speculation took the upper hand. As a result, the Upanishads fail to give any rational explanation of the experience of things. Paul Deussen criticized the idea of unity in the Upanishads as it excluded all plurality, and therefore, all proximity in space, all succession in time, all interdependence as cause and effect, and all opposition as subject and object."

Perfect.