On the topic of philosophy in Eva, I really enjoy how Evangelion uses the AT Field in the original show. You honestly think that with a name like AT Field, that its use is similar to (if not the same) as force fields in science fiction. The AT Field is a huge metaphor for boundaries, how people utilize said boundaries, + gives us insight to who the characters are in Evangelion.
The AT Field also goes under the Hedgehog’s Dilemma, if you think about it.
(More metaphorical nerding out under the cut)