Comment by klank

I'd love a further description of how you can have a program with the entire text of wikipedia that only ever outputs 5. It is not immediately obvious to me how that is possible.

Assuming the text of wikipedia is meaningfully used in the program, of course. A definition of "meaningful" I will propose is code which survives an optimization loop into the final resulting machine code and isn't hidden behind some arbitrary conditional. That seems reasonable as a definition of a program "containing" something.