In full though
what you suggest is forcing a dream mind state so your controlling a dream but we can only dream things we’ve seen before, thus this technology is so nearby yet so far away. We would first have to bacically feed hundreds of millions of images into the brain while using this VR technology to connect to a worldwide network server along with millions of other people which would require a lot of data and connected reach around the world, it’s own maintaining and improving daily this would take at least 50 years to develop then what happens if a person (grey hat) decided to test that system then like SAO suggest uses this to fource people into induced comas because it requires such a large power source, and is directly connected to the brain. If you wanted to stop such a thing you would have to hire white hat hackers to help prevent it. It’s a lot of work to maintain, I mean a worldwide network server connected via satellite producing a cardinal system. Unless the government wants this to happen so they could develop mind control technology I doubt they would help maintain and supply money for this. It could be used with people who have terminal diseases and are in constent pain, but compared to the population they are minimum, surgery could use something like this but the heart rate can still increase unless that is connected to, so it’s still Danny nearby impossible I will admit I would love to have such a thing to escape reality, it would help with depression as you can be whoever you please but… It’s still a distant, distant thing if it will ever actually be a thing. Although people have made good points it’s going to be later rather than sooner.