Re: river routes:
Many things are "basic" in that they are fundamental, even vital, yet they are far from obvious.
Some examples:
- The application of all situation- and unit-type-bonuses to the defender (in contradiction to the Civilopedia unit info).
- The beaker bonus given for researching techs with multiple optional prerequisites.
These "basic" rules might be known to those who frequent online forums, or have played extensively and experimentally, but they are a mystery to many others.
The rules governing "trade" are equally mysterious and far more complicated. There are unique rule sets for unit passage, tech/gold/map trading, resource trading (to rivals), resource access (within the empire), and commerce-generating trade routes. Each responds differently to technologies, intervening hostile territory, intervening hostile units, intervening closed borders, impassable terrain, etc.
Moreover, there is no clear hierarchy for passage. For example, intervening hostile borders can close off foreign (commerce) trade routes to a third party, yet it is still possible to trade resources with that same third party. Counterintuitively, that same scenario will prevent resources from moving among your own cities.
Yes, they do.
And no, they don't.
The term "connect", like "trade", is a careless omnibus term for many different things. According to the Civilopedia, the Sailing technology,
"Enables
on Coast"
But just when you think that icon means one thing, the section on civics describes a consequence of Mercantilism:
"No Foreign Trade Routes
traderoute: )"
The latter usage refers solely to commerce trade routes, not the trading of resources (et. al.) while the former is another case of obfuscation. There is no consistency.
One need look no further than the game we played to see this.
Notice that there is a valid route along the coastline. But it is made invalid because the terrain on one side (ice) is "impassable".
Further down, the terrain on both sides of the river route (mountains) is also "impassable". Consistent application would invalidate this route as well.
Cheers,
J
The basics.
Just the basics of this game.
Many things are "basic" in that they are fundamental, even vital, yet they are far from obvious.
Some examples:
- The application of all situation- and unit-type-bonuses to the defender (in contradiction to the Civilopedia unit info).
- The beaker bonus given for researching techs with multiple optional prerequisites.
These "basic" rules might be known to those who frequent online forums, or have played extensively and experimentally, but they are a mystery to many others.
The rules governing "trade" are equally mysterious and far more complicated. There are unique rule sets for unit passage, tech/gold/map trading, resource trading (to rivals), resource access (within the empire), and commerce-generating trade routes. Each responds differently to technologies, intervening hostile territory, intervening hostile units, intervening closed borders, impassable terrain, etc.
Moreover, there is no clear hierarchy for passage. For example, intervening hostile borders can close off foreign (commerce) trade routes to a third party, yet it is still possible to trade resources with that same third party. Counterintuitively, that same scenario will prevent resources from moving among your own cities.
In CIV the rivers connect cities, even different rivers, 'cause they connect the cities via sea coast.
Yes, they do.
And no, they don't.
The term "connect", like "trade", is a careless omnibus term for many different things. According to the Civilopedia, the Sailing technology,
"Enables

But just when you think that icon means one thing, the section on civics describes a consequence of Mercantilism:
"No Foreign Trade Routes

The latter usage refers solely to commerce trade routes, not the trading of resources (et. al.) while the former is another case of obfuscation. There is no consistency.
One need look no further than the game we played to see this.
Spoiler :

Notice that there is a valid route along the coastline. But it is made invalid because the terrain on one side (ice) is "impassable".
Further down, the terrain on both sides of the river route (mountains) is also "impassable". Consistent application would invalidate this route as well.
Cheers,
J