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The Half-Life Connection2 hints left
Soon after you slip out of the testing chamber, you'll enter a tiny office. Peek through a window, and you'll see a "Dollar$ and Sense" powerpoint outlining Aperture's plans to compete with Black Mesa for funding.

What is Black Mesa?

Black Mesa is a huge research facility and the setting of the first Half-Life game. By acknowledging it directly, this presentation confirms the two games are set in the same universe - something that Portal 2 and Half-Life 2: Episode 2 expanded on.

What do the rest of the slides show?

An outline of Black Mesa's funding sources


A graph showing the two companies' GSA schedules


A case study for the Genetic Lifeform and Disk Operating System (GLaDOS), and the perks of using it as a fuel system icing inhibitor

Guide help

This is the low-spoiler guide for "The Half-Life Connection" puzzle in Portal. Unlike in normal walkthrough, you get gradual hints on how to solve the puzzle. Click the big button below to see your first hint. If the hint contains a spoiler, you will be warned about it before clicking.

Up to "Trivia"
Hints written by Kieron West
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