"Because of the improved scale that Source offers, we are able to make areas of the facility more to a real-world scale, because we have more room and more power to work with. This is evident in areas like Surface Tension, which could, in terms of scale measurement, be on par with a real-world facility of a similar nature. Levels have the most leeway in terms of relating to their original counterparts, though, and that's one department where what you see in Half-Life won't necessarily always match up with Black Mesa. These changes are all being done with logic and visual quality as their backing, though, so it'll still look damned good."
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