Public Opinion / Ideology Pressure (culture/tourism) mechanics guide

credits

http://forums.civfanatics.com/showthread.php?t=504903 by sonicandfffan
http://www.youtube.com/watch?v=2OqBZ9m-Lsg by Marbozir

Tried to compact this to the minimum

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CIV_X_VS_CIV_Y_Influence (influence by player screen)


CIV_X_VS_CIV_Y_Influence = Tourism_With_Modifiers_Accumulated_From_Civ_X_Towards_Civ_Y / Culture_Accumulated_By_Civ_Y

Each turn the tourism output listed for Civ X (subjected to some modifiers) gets accumulated towards influencing Civ Y ..

Few Tourism modifiers (those are additive modifiers - can see which are in effect by hovering "+/-%" column in influence by player screen)
-open borders from Y (can work only 1 way) 25%
-at least a trade route from X to Y or from Y to X (always 2 way) 25%
-X diplomat in Y city (1 way) ?%
-shared religion (2 way) 25%
-different ideologies for X and Y -34%
-..

Each turn this accumulated_modified_tourism lump is measured against the other civ's total accumulated culture... The result falls into one of those 6 intervals

0: Unknown: Less than 10%
1: Exotic: 10% - 30%
2: Familiar 30% - 60%
3: Popular: 60% - 100%
4: Influential: 100% - 200%
5: Dominant: More than 200%

(the civ that first achieves Influential status with all remaining civs wins a cultural victory...)

The number in front is the level of influence Civ X has on Civ Y on the current turn.
Can see exact % by hovering the "LEVEL" column values in influence by player screen and an estimate number of turns until the next change based on current turn outputs and modifiers by hovering the "TREND" column in the same screen ..

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Public_Opinion_LEVELS (culture victory tab of Culture Overview)

Public_Opinion_LEVEL = Sum_Of_Influence_Difference_From_Civs_Following_Different_Ideology - Sum_Of_Influence_Difference_From_Civs_Following_Own_Ideology + World_Ideology_Pressure

Values can fall into:

0<=: Content (0 change)
1-2: Dissidents (1 unhappiness per city or 1 per 10 population, whichever is more)
3-4: Civil Resistance (2 unhappiness per city or 1 per 5 population, whichever is more)
5+: Revolutionary Wave (4 unhappiness per city or 1 per 3 population, whichever is more)

For each civ you calculate the difference between (their_influence_over_you - your_influence_over_them) and keep only the numbers above 0..

World_Ideology_Pressure is

0 if no world ideology is chosen
-2 if your current ideology is the same as chosen World Ideology
+2 if your current ideology differs from the chose World Ideology

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Some conclusions:

High culture output will minimize influence from other civs towards you (affects both the negative influence from civs following different ideologies and the positive influence from civs following the same ideology you are)
High tourism output will minimize influence difference between your civ and others (what is used to calculate public opinion) ..
One or more mega tourism pusher following the same ideology as you can "protect" you from the negative effects from other tourism pushers following different ideologies.. It might make sense to increase modifiers with the "protector" but be careful - not to let him win a cultural victory ... (chose the ideology of the one influencing you the most)
You can reduce Influence difference with a another civ by:
- increasing your culture output (slow) or via GreatWritter bulb (culture spike)
- increasing your tourism output (slow) or via GreatMusician bulb (tourism spike)
- reducing his tourism modifiers towards you ( declaration of war should drop trade routes open borders and diplomats? )
- decreasing their culture and tourism output (conquering some of their cities//repossessing some of their great works in the same time or paying another civ to do it for you).

Any chance you can dig for the rule for city flips from influence?

I kept on playing after victory to see how long it would take to trigger something.

I ran all non freedom civs into revolutionary wave for ~60-70 turns and only got a city at some break point when spain went sub -20. At other points in time, since this was on deity, their happiness was hovering between -10 and +10 and nothing much happened.


Also, an additional conclusion is DO NOT overlook tourism for any VC. You don't need much TPT to achieve exotic or familiar and it will significantly reduce the impact of other ideologies on your global happiness.

I am now on the receiving end of negative Public Opinion and have a question. I was the first choose an Ideology and chose Freedom as I am going for a SV. Eventually no one else chose Freedom (of course) and the World Ideology vote passed in favor of Autocracy (I wanted to get Sciences Funding and that's where my vote went). Now I have a net Happiness of +41 and the Public Opinion is Civil Resistance -10.

So what happens now? As long as my net Happiness remains above 0, I'm good? I have 6 Tenets in Freedom including Space Procurements, am I in any danger of losing that?

You should be fine. Public Opinion doesn't affect anything, it just subtracts from your global happiness. If you're against the World Ideology and you aren't in Revolutionary Wave it's probably not going to happen before you launch as long as you don't do something incredibly silly like open your borders to the tourism leader.

I think as long as you're happy, you're fine.

Which is exactly the problem with the current flipping mechanism. I think if you're at REVOLUTIONARY WAVE it seems pretty silly that if you are only at 2 happiness, your entire empire can be pretty content to chug along with not much to show for it - seems crazy, but seems to happen quite often with the AI.

Deau said:

Any chance you can dig for the rule for city flips from influence?

I kept on playing after victory to see how long it would take to trigger something.

I ran all non freedom civs into revolutionary wave for ~60-70 turns and only got a city at some break point when spain went sub -20. At other points in time, since this was on deity, their happiness was hovering between -10 and +10 and nothing much happened.


Also, an additional conclusion is DO NOT overlook tourism for any VC. You don't need much TPT to achieve exotic or familiar and it will significantly reduce the impact of other ideologies on your global happiness.

Click to expand...

think I've heard in one of Maddjinn's videos a civ needs to spend at least 10 turns (don't take my word for it) bellow -19 happy for its cities to start flipping .. And they'll start flipping to the civ that has the desired (not sure if this is the exact term used ingame) ideology and has the closest capital (which is not necessarily the one applying most/any ideology pressure )... But if/when they get so low on happiness changing ideology becomes an attractive option (simple cheap way out ) .. So I wouldn&#8217;t expect massive city flipping action even on the most culture/tourism heavy games ...

Deau said:

Also, an additional conclusion is DO NOT overlook tourism for any VC. You don't need much TPT to achieve exotic or familiar and it will significantly reduce the impact of other ideologies on your global happiness.

Click to expand...

I find empirically that whoever reaches Industrial second tends to have strong tourism, and I'm going to get pounded regardless of whether I fill Great Work slots.

Much more effective is to simply push and quickly get the tenets. Producing and burning Writers and Artists for at the right times is at least as effective at managing if not more so.

As peddroelm already said, city flipping only occurs when your happiness is -20 or below for an extended period of time (i don't know the exact turn number), but you will not be forced to change to your populations preferred ideology. If you really have to, you can happily limp along at 15 and buy the last part for your spaceship.

If you decide to change your ideology, you can do so in the ideology screen. However, you can only switch to the preferred ideology and you will lose 2 tenets.

Whenever I go for Science I save 4 Writers and an Artist. Then I try to be the Highest Contributor on the World Fair. +100% Culture with a Golden age for 8 turns and every writer pops for a social Policy and insane amounts of Culture.

By the time I launch, the AI do not have enough Tourism to affect me(as tourism boosting buildings + Internet come later in the game).

Ah, I forgot about getting Great Writers after I won worlds fair.