I finally got the gamestar video up and running and I noticed something. It took that little city 10 turns to grow to a size 2. If you look at the city view screen, you will see it makes 4 food per turn. I'd guess that expansing to a size 2 city requires a mere 20 food, but 40 from there on up.
10 turns is also how long it took to go from a 1 radius city to a 2 radius city through culture. 10 turns with a 1 culture/turn palace. I also believe that you start out with a workable radius of 1, which improves later in the game. "Workable radius grows, but slower than culture boundaries" someone once said.
And at a production of 2, you can build 2 10 shield or 1 20 shield unit in that time. Being able to crank out Jaguar warriors every 5 turns for exploration would be powerful, assuming you have enough cities and trade to support them.
I wonder how much the 0.0.2/2 scouts cost to build and support. Apparently starting with 1 the very first turn is quite powerful under Expansionist... unless someone captures him
The other thing I noticed is that you can choose which tech you want to research, and then queue up the techs to be researched. The mouse pointer touched literature, and both alphabet and writing lit up as well. I wonder if you research a random tech from those you have selected, or if it actually goes in the order they were selected.