Ok, so you consider the "tech broker" as an exploit. Could be, although I think that for the first people who came up with this idea, it certainly was a "stroke of genius" and an ingenious way of winning the game, so it may as well qualify as a "strategy". But what about the "strategy" to set science to zero at some point in order to use the extra gold for a large military to quickly conquer the world? Does that count as a "strategy" in your opinion? It is definitely a way to win the game quickly and efficiently, so would qualify as a "strategy" in my book. (And it is also something no longer possible in Civ5, because in Civ5 the beakers can't be converted into gold, as can be done via the slider in Civ3.) PS: and it even involves an element of risk, like most strategic choices do, because if the military is not enough to carry you through to victory, you risk falling severely behind in tech. So you have to evaluate the pros and cons, before doing it, which in my eyes shows that it is indeed a "strategic choice".