The Dummy-Plug-Proof

The so called "dummy-plug-proof" (formulated by Bochan_bird) somehow goes like this :

The AT Field is "the light of the soul", the "barrier of the heart".

So, if there's no soul, there's no At-field.

The dummy plug contains no soul - it imitates brain-patterns.

Ergo, the dummy system alone is unable to manifest an AT Field.

The dummy plug system is designed to operate the EVAs without the pilots.

The Mass Production EVAs + dummy plugs generate AT Fields.

Ergo, the [MP EVA + dummy plug] combination must have a soul.

If the dummy plugs have no soul, then the MP EVAs must have souls.

Ergo, the MP EVAs, and by extension the NERV EVAs, which also have (had) dummy plug systems, all have souls.

Taken and slightly altered from the Neon Genesis FAQ by Brandon Jamieson. No copyright-infringement intended.