with the Tradition vs Progress discussion I'll just note a few counterpoints to put in Progress' court.
1) The +1 speed for workers and settlers, plus the +25% improvement speed for workers, really adds up. Often that +1 speed is the difference between moving and immediately starting a new improvement, or moving and waiting a turn. Progress workers repair pillaged tiles in 2 turns vs 3, that really adds up if you got beat up in a war. +1 speed for settlers can get a city going 2,3, even 4 turns faster in rough terrain. I generally find that when people aren't doing well in progress, they aren't prioritizing workers early. That free worker plus a few other faster workers, and your infrastructure gets up noticeably faster as compared to Tradition.
2) Progress has a lot more gold in general. With progress I am swimming in gold, whereas my last tradition play I was actually going broke part of the time. this is of course further enhanced by Forbidden Palace. With progress I can invest invest invest much more often than tradition. That is more bank science, and just more hammers gained in general. Its also useful for diplo unit buying, and a few extra CS allies can be a big yield boost.
3) Progress' late game GW faith buys are a major culture comeback in the late game. Now sure culture earlier is better than culture later, but it is quite a bit of culture you pick up on the back nine.