Some questions/thoughts playing the demo

[robo]

Playing the (german) demo, I have some questions: what triggers town growth? Is it possible to add some realism to the triggers with the editor? Let's say towns need a steady flow of food and other goods and  industries to build up employment and buying power.
How does passenger transport work? Are passengers able to find there way to a town or change the train, if there's no direct connection between two towns?
In the german demo, there are for example steel mills and iron is piling up, but there' s no coal on the map for a long time to produce the steel, how realistic is this?
The dynamic system of prices correlating to supply and demand is interesting and a progress compared to other transport games, but still too simple and too automated. One problem is, that the production output of farms and factorys is so low, that trains are getting unprofitable very fast.