The episode title, Icarus, refers to a person from Greek mythology who wanted to fly by creating wings using feathers and wax. By the end of the story, he fell to his death by flying too close to the sun. The moral of the tale revolves around the concept of hubris, excessive pride of one's ability, so much so one loses touch with reality.
The equivalent term to the aggregation sequencing as mentioned in this installment of the series is defragmentation. Defragmentation is the process of finding all fragments of a file across the storage medium and bringing the pieces closer together so that a file becomes faster to access.