As his mind dived into the lake of information within the crystal ball, a large amount of information surged into his mind. This made it unclear if his mind was the one descending to meet the information within the crystal ball or if it was the information that was coming up to meet his mind.
His mind is already powerful enough not to forget whatever he has learned, but in order not to waste this precious information, he had the five virtual copies in his mind pause what they were doing to help him distill the information into a mental construct.
The virtual copies in his mind don't need to focus on the vessel sigil techniques all day without interruption because he has learned them. He can afford to divert his mental capabilities elsewhere without jeopardizing anything.
