Is there any differense building wealth and then use the slidder towards science , than just building science?

Personally I prefere to build wealth so I have better control and its easier to just put the slidder down to generate some extra fast cash...

It depends, city which has library, university, observatory, etc will generate more beakers, while city with grocer, market, bank, etc will generate more gold.

It depends, city which has library, university, observatory, etc will generate more beakers, while city with grocer, market, bank, etc will generate more gold.

And a city with all of those....

(like your cap and first few cities)

It doesn't matter. Buildings don't give any bonuses to producing wealth or science.

What matters are the buildings in the cities that don't produce wealth or science, because you can adjust the science slider.

If you have a lot of libraries but no marketplaces/groceries in the other cities, you probably want to produce wealth so the other cities can generate more science by putting the science slider a bit higher.

It depends, city which has library, university, observatory, etc will generate more beakers, while city with grocer, market, bank, etc will generate more gold.

If you're talkiing about the interaction with "building wealth or science", this is wrong, since building wealth or science take into account the production modifiers, not the others.

As for the main question, it depends of your empire. Very basicaly, if your main commerce cities have more science multipliers, you should build wealth, and if they are gold-moltipliers oriented, you should build science.

For an example: let's say that all your cities have a library (and no other multiplier), that you generate 100 commerce with all of them, and that you need 50 gold for your upkeep. You can then generate 50*1,25 = 62,5 beakers.
If you generate 10 more gold through wealth building, you can up the slider to 60% science, so you will generate 60*1,25 = 75 beakers. If you build science, you can't touch the slider, and will generate 62,5+10 = 72,5 beakers. You should build wealth.

On the other hand, if all your cities have a market but no library, you can generate 60 beakers (slider at 40% make 40*1,25 = 50 gold, sufficient for th upkeep).
Then, if you build science, you will end up with 70 beakers. And if you build wealth, you will be able to put the slider at (theoritically) 32% (40% during 2 turns, 30% during 8 turns), so you will generate 68 beakers per turn. In this situation, you should build science.

Are you sure factories add to producing wealth/science/culture?

Yes. Anything that adds to production of stuff in general will increase the amount of wealth/science/culture that gets built. Bureaucracy, factories, forges, corporations, ironworks, maybe some other stuff I've missed. Is State Property the one that boosts production by 10%? That should work too.

Stuff which *won't* increase the production of w/s/c:

Organised Religion (only works for buildings)
Police State (only works for military units)
National Epic (ditto)
Hammer overflow (gets kept until you start building something 'real')

I can't remember what happens with chopping. My guess is that it behaves the same way as hammer overflow.

Thanks guys I think I got it now....

Slider= bonus from Libraries/Markets, etc.

Build=Bonus from Forge, Factory

So if you have lots of Monasteries, Libraries, etc. and few Markets/Grocers then Build Wealth and Slider Science

If you have lots of Banks, Markets, etc. and few Libraries/Universities then build Research and Slider Wealth

In the later game, when techs cost thousands of flasks, setting one medium-grade city to convert its dozens of hammers to science will make only a small proportionate difference to your total research. But converting them to gold very often allows you to keep the research slider high, boosting flask productionfrom all your cities without bleeding the treasury dry. Of course, your gold-producing city continues to make its own research contribution from its commerce.

There is a very thorough discussion of this issue over at Gold, Beakers, and Deficit Research (http://forums.civfanatics.com/showthread.php?t=242530).

I think it would depend on whether you want a high science slider or a low science slider, which would depend on beaker and gold multipliers throughout your empire.

When you chop while building wealth it'll get kept as the hammer overflow. So if you want a jump on that wonder you will have the tech for in a few turns, you can sort of "pre build" it. And get a little cash.

I prefer Wealth in order to increase my slider percentage allowing my science cities to produce more beakers

I cast my vote for "Whatever you need more" :o

Unless you need gold, building wealth will not impact your research at 100% science slider. ;)

Unless you need gold, building wealth will not impact your research at 100% science slider. ;)

That situation rarely happens in a decent sized empire pre-corporations though :)