Most of us have seen the matrix movies in which you simply download a program into your brain and can then kung fu, kick thai boxing or karate like the masters or you know how to fly helicopters without any training. Would that work? Maybe in the distant future but in the moment and in the near future it will be impossible.
Our brain is not a computer in the sense that we know it from our computers at home. Our brain, as far as we know, does not process digital informations. Our brain is a learning machine. We as humans must first learn to master a skill. This includes gaining experience, which our brain processes.
While your computer is as stupid today as it was yesterday. Your computer, on the other hand, doesn't learn, not even through its mistakes. You control your computer. But different is again with an AI. Depending on the development of an AI, it is capable of learning, but in turn it lacks the process of collecting experiences, as a human does. To compare our consciousness or mind with an AI is therefore not really correct.
Our brain has no windows, it has no software, it has no programming, but a mind that has to be filled through experiences that make people learn with the help of the senses. And over the years, it's the human being that develops. With a computer, you can immediately program in something that it must be able to do immediately. Of course it would be an advantage if we were designed like that, but would we still be human beings then?
There are the first steps of brain-computer-interfaces already today, but here it is the case that humans use the machine as an aid and not to download new abilities into their brains. And to control the aid technology, humans must first learn how to control it for the first time with a long process of training.
Would it be possible to establish a communication between brain and computer, where one could download information and programs of the computer onto one's brain? Most likely yes. But the interface between digital information and memory is a bit complicated, because both can be seen as two different operating systems or languages. We don't know exactly which language our brain speaks yet. We first have to find a common language between computers and our brain and that will take many decades.
So don't expect that you will soon become a kung-fu or karate master by simply pressing a button or that you will be able to download all informations from the internet into your brain that you want.
But such a technology would also be a bit dangerous. What would happen if you were able to reset your brain? And let's think further: What if a dangerous AI was developed, reprograms itself and hides itself in the wide spaces of the internet and then disguises itself as something that people want to download onto their brains, and people download the AI into their brains?
Or a simpler example: a virus?
Or a trojan with which a hacker can control YOU
