Here's why:
* SAO is fiction: The series is a work of fiction, exploring the potential risks and consequences of immersive virtual reality. While the technology is advanced, it's not based on real-world science.
* VR Technology is evolving: VR technology is constantly evolving, becoming more immersive and realistic. However, it's still a long way from achieving the level of realism depicted in SAO.
* Ethical Concerns: The concept of a fully immersive VR world where your consciousness is trapped raises serious ethical concerns. It's likely that such technology would be subject to strict regulations and scrutiny.
However, some elements of SAO technology are already being explored:
* Brain-Computer Interfaces (BCI): Researchers are developing BCIs that allow users to control devices with their thoughts. While not as advanced as the NerveGear in SAO, this technology could potentially lead to more immersive VR experiences.
* Immersive VR Experiences: VR games are becoming increasingly realistic, with advancements in graphics, sound, and motion tracking.
* Multiplayer VR Games: The social aspect of online games is already present in VR, with players interacting and collaborating in virtual worlds.
In Conclusion:
While the specific technology seen in SAO may not be realistic in the near future, the advancements in VR and related fields suggest that we're moving in the direction of more immersive and realistic virtual experiences. Whether those experiences will reach the level of "trapped" consciousness remains to be seen and depends on a complex interplay of technology, ethics, and societal acceptance.