Things you may not have noticed (spoilers ahoy!)

[Potato]

Spoiler below!

1. In the beginning dream sequence, Ashley says that the red tracer fluid is green. This is a reference to the inverted spectrum thought experiment.

Pretty sure this is just in reference to the traffic light in the dream scenario you're. You can hear a bunch of cars honking and stuff right after she says it.

I always thought #6 was weird, the talking door in Upsilon. Never thought I'd feel weird about killing a metal door, but it was interesting. Cool list so far! A lot of these I encountered in my playthrough, but some of these are pretty neat.