I recently started watching this series, as always in case of many anime/manga, there is lot of symbolism encoded there, but most interesting thing is that this anime was considered one of the best in the community. Putting aside all this day to day navigating inside the labyrinth of the system (geopolitics, finance, civilizational sociobiology), it is nice to look at what teenagers currently like (information field), and in the future will influence modulation of existing order of things, when in many cases - outdated 3D minds their parents will pass away.