From a programming perspective, I actually consider this sloppy work. For an extra few hours' effort, they could have randomized the key civ (or not had a key civ at all) rather than linking it to something as seemingly unrelated as shield color. Unfortunately, Civ-II is riddled with examples of this (e.g., "Oedo" years). However, for whatever reason, I and many, many others still really enjoy the game. I think most of us have viewed finding these instances of corner-cutting as challenges in and of themselves.
However, from a sort of "abstract" perspective, a technologically inferior civ <u>should</u> hamper your development, and a technologically superior civ <u>should</u> help your development. This clearly illustrates the value of cooperation, as well as the fact that it will be more costly for a civ to break new ground. I think this is consistent with history, and kudos to the programmers for finding a way to include it.
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"Those who dance are considered insane by those who can't hear the music." -- George Carlin