The terms "red pill" and "blue pill" refer to a choice between the willingness to learn a potentially unsettling or life-changing truth by taking the red pill or remaining in contented ignorance with the blue pill. The terms refer to a scene in the 1999 film The Matrix.
Coincidence the Matrix (movie) grew people as a crop, used for energy, and controlled their mind?
Sound familiar?
Wonder where they derived that idea from.
Now comes the 'conspiracy' label.
Deeper we go, the more unrealistic it all becomes.
The end won't be for everyone.
That choice, to know, will be yours.
Q
This is your last chance. After this, there is no turning back. You take the blue pill—the story ends, you wake up in your bed and believe whatever you want to believe. You take the red pill—you stay in Wonderland, and I show you how deep the rabbit hole goes. Remember: all I'm offering is the truth. Nothing more.
What we were trying to achieve with the story overall was a shift, the same kind of shift that happens for Neo, that Neo goes from being in this sort of cocooned and programmed world, to having to participate in the construction of meaning to his life. And we're like, "Well, can the audience go through the three movies and experience something similar to what the main character experiences?" So the first movie is sort of classical in its approach. The second movie is deconstructionist, and it assaults all of the things that you thought to be true in the first movie, and so people get very upset, and they're like "Stop attacking me!" in the same way that people get upset with deconstructionist philosophy. I mean, Derrida and Foucault, these people upset us. And then the third movie is the most ambiguous because it asks you to actually participate in the construction of meaning…
— Lana Wachowski, Movie City News, October 13, 2012