And I wrote that physics or science in general will never be able to discover the content of the subjective experience. The subject isn't there for a scientist. Only the object.
Yeah, and that is wrong. You don't know what "subjective" means, apparently. It seems that you make up definitions as you go along, which isn't helping this conversation.
Only the electrochemistry.
There's nothing else. You are assuming that there is, but you cannot do this unless you can show evidence for it. Otherwise you have to tentatively conclude that there isn't, like everything else you can imagine but have no evidence for.
When experiencers tell us, independent of each other, that this realm is 'tangible' and 'more real than here', we have to believe them.
No, we don't. "More real than here" is just an impression. It doesn't mean that it represents reality.
Hallucinations often more real than here, but I don't see you arguing that drug-induced psychosis represents another reality.
There is no way science can investigate this.
Of course there is. Here, it is you refusing to admit that possibility because doing so would take the exciting dream away.
An NDE is of a hidden nature. Like a dream.
Dreams are memory-organising brain trips. There is literally no reason to assume that they are anything else. In fact, there is reason to assume that they aren't, in good part because dreams keep including recent memories.
Because we can only measure chemistry in the brain at best.
You are again assuming that there's something else. Stop that. Start from zero, not from what you want to believe in.
This 'interaction'-definition is about the material world.
No, it isn't. You are NOT listening. It's a definition about things that can affect one another. If they can, they are physical. If they cannot, you cannot know of them. It's true by definition. What it entails, however, is the interesting part. If they cannot interact with the physical world as we know it, then you cannot have any sort of experience of it. If you can have an experience of it, then it is because of your interaction with it, and therefore we can detect it. You can't escape this logical implication.
How does the content of a dream interact with this world?
Dreams are part of this world. Just like your musings and imaginings are. It's brain chemistry playing with your visual cortex, etc. You keep thinking it doesn't interact because you don't understand the definition of the word "interact". When you touch something, your molecules and their constituents interact with that thing's molecules and constituents. If you experience a thing, you interact with that thing, whether it's in your brain or from the outside world. There is no logical way to experience something without interacting with it.
Is taste real? Is the experience of the color red real? There is no interaction between my experience of the color red and the world I observe.
Of course there is. One is caused by the other.
There is no interaction of the subjective experience of a material system with the physical world at all. There is only electrochemistry.
The experience IS electrochemistry. You are creating a distinction where none are needed, presumably because you feel that it is thus. Newsflash: feelings are usually totally wrong.