To Temp Duplicate, understanding the overall item was far less important than understanding the individual materials that made it up. Zarek found that by studying the individual materials, Temp Duplicate came to him sharper and faster, and the energy he used in forging items became lesser and lesser.
The beauty of it all was that because of his sensitivity to time, Harmonic Recall was leaving Temp Duplicate in its dust. But the stronger Harmonic Recall became by comparison, the more shocking the improvement to Temp Duplicate became.
He found that Harmonic Recall wasn't just a factor of time. It wasn't that he was seeing further and further back in time, but rather that the difficulty in comprehending and reverse engineering what any given item had been through had become far easier because his depth of understanding toward it had deepened.