duke o' york
It don't mean a thing....
I realise that it is extremely early to engage in this kind of discussion, and that when the time comes, someone will post a poll, but I want to kick off the inevitable scrap over which wonders we want early. 
I have noticed lots of people saying that Literacy would be a good tech to aim for so that we can build the Great Library. What!!!
The Great Library may give you a few techs now and again, but it impairs your own tech research to such an extent that another civ may beat you to your target tech and gain a head start on that key wonder. Whether the tech be invention or monotheism, the Great Liibrary can only hinder your progress by giving you lots of techs that you didn't want or need and ensuring that the target tech takes ages to reach, when it would have taken far fewer turns without these unwelcome additions to your tech list. If I want to catch up on techs that I've missed then I find it is far more worthwhile to build Marco Polo's and trade these techs because the cost of having an extra tech is offset by your giving one away and your research doesn't suffer. With Marco's you are also free to gift techs to the purple civ (we're yellow fortunately) and further boost your speed of research. And you get world maps!!!
If you want to use a wonder to boost our techs then the best one is clearly the Colossus. It will have such an enormous impact in its home city (I hope we get an SSC
) that research will be vastly improved, but it also gives a boost to other cities trading with the SSC - lightning quick techs! If we think we can only get one ancient wonder then this has to be the one!!
Well I've set out my stall here and await anyone foolhardy enough to argue in favour of the Great Library as a vital wonder....

I have noticed lots of people saying that Literacy would be a good tech to aim for so that we can build the Great Library. What!!!

If you want to use a wonder to boost our techs then the best one is clearly the Colossus. It will have such an enormous impact in its home city (I hope we get an SSC


Well I've set out my stall here and await anyone foolhardy enough to argue in favour of the Great Library as a vital wonder....