Enhancing the truth?
At the end of Chamber 4, the robotic voice states that "As part of a required test protocol, we will not monitor the next test chamber. You will be entirely on your own. Good luck."
The truth eventually comes out when you beat or break the puzzle, but the lie can be exposed almost immediately. Break any of the surveillance cameras (which are still active and moving!), and she won't be able to resist telling you off.
So much for 'entirely on your own'!
Guide listing help
Unlike normal walkthroughs, in Nice Game Hints you can select just the puzzle you want hints for. Here are listed the puzzles for "Enhancing the truth?" in Portal. The guide you choose only contains information about that puzzle, reducing possible spoilers for other puzzles.
Hints written by Kieron West
Kieron West
Hi! I have written video game guides since 2018. Any money I make here will go towards improving my equipment so I can make the things you enjoy even better (and faster!)