I see T=think tanks full of intellectuals, evangelists, strategists who are way ahead in their thinking on future of us all.
As "shalabieh" said, traditionally research and consultancy organizations. The military tank thing is hilarious "shalabieh" :-), but I am wondering why do you bring up the year 2008 specifically in your question?
traditionally a research institute... but I always think of a group of people in a military tank thinking lol!