I suppose you could call it ‘residual thought’. At any rate, I have taken in all the information remaining in these areas and given them shape. There are plenty of ways to read thoughts, but for me it’s like a record or a CD. I run Dark Matter across the tiny ups and downs on the surfaces of materials to obtain the information. The event that once happened here left its mark in ways too tiny for the eye to see. The record of those vibrations allows me to replay their final moments

Toaru Majutsu no Index New Testament, vol.6 ch.7 pt.4