The AT Fields are impossible because they had to be.

Not because Anno's team lacked scientific rigor — they had it in surplus — but because the entire conceit expresses terror masquerading as worldbuilding.

An AT Field is simultaneously a wall between self and other, the physical boundary of consciousness itself, and the only thing preventing Third Impact (total merger, death of individuation). It's a physics that collapses under inspection because it was never meant to describe the world. It was meant to describe a feeling.

That feeling crystallized in the 1990s when Japanese neuroscience and psychology began publishing findings showing consciousness as substrate — something material, mappable, subject to external influence. The brain became legible. In 1995, when Evangelion aired, this wasn't abstract theory; it was methodology. Functional MRI was new enough to be terrifying, not yet normalized, and the unconscious wasn't metaphor anymore. It was tissue you could photograph.

Watch Seele's obsession with instrumentality — the forced merging of all AT Fields. It's not conquest, but evangelism dressed as logic: if the self is only neurons firing in predictable patterns and if consciousness can be imaged and eventually simulated, then the boundary between one mind and another becomes arbitrary. Anno renders this not as futuristic but as bureaucratic — Seele operates from windowless rooms filled with tang and filing systems. The visual grammar says the machinery that dissolves you is already administrative. The show's refusal to explain AT Fields clearly becomes the entire point, because ambiguity wasn't artistic choice. It was the only honest response to a culture that had just learned its own architecture was knowable.