MrCynical:
Why is this a problem though? As you point out, the CE economy is still going to be farming bonus food tiles, and hence can either grow faster, or run plains cottages. Until a city hits size 20, using extra tiles isn't a problem. Indeed from a cottage perspective, if I have the countering food tile, it's preferable to run two tiles giving 1 food and 2 commerce each than one giving 2 food and 4 commerce, as it matures the cottages faster.
That's not entirely true. Extra tiles are always a problem with me because of tile quality. You really should only establish the best cities you can, but there are times when your technology and your tile placement and city placement aren't really all that optimal. Sometimes, you've got a city harvesting pigs, cows, and two spices. That's 4 tiles gone right away. And what happens when the rest of the tiles are jungle and you just don't have the workers to spare, or if they're hills and you still need extra research?
I'll have to say here that in my experience, especially past Biology, working on less tiles with more pop is more doable with SE.
But in the early stages there is a similar delay on specialist output. Barring Pyramids you've got a wait for representation, and similarly a wait for biology to run comparably 1 specialist to 1 town. A cottage/hamlet may not compare well to a representation scientist, but to a non-rep scientist needing two farms (OK a bit less allowing for food resources), it's not so bad. Plus you also need Caste system for more than two scientists, clashing with slavery, or forcing non-science producing specialists.
Absolutely. Would you agree that there's a great incentive to push for more SE cities if you happen to build the Pyramids and can use Rep? HR itself isn't so bad for SE because it relaxes the happy cap and SE, as we know, is pop intensive.
In early parts of the game, Caste System would indeed be a great thing, but I don't think that running SE throughout most of your Empire is really the point of doing that. Mostly, I would do that to push the GPP production in my main GPP farms, which I would do even if I were mainly CE. Given a Caste System change, even many of the smaller cities wouldn't even begin to support one or two Scientists anyway, so between that and a Hamlet, I rather think that the differences are minor on the face of these variables alone.
Now, if I were running Rep AND Caste system, for reasons relating to my GPP farms, wouldn't you say that there's a definite push for a greater SE focus in my secondary cities?
I have simply related my experience of playing both economies. I was someone sarcastic at someone who's entire response to my argument was "That's nonsense", as I have no patience for those who refuse to provide even the most basic counterargument. It was somewhat difficult not to appear superior in response to that.
If the comment was idiotic and groundless, then I see no point in referring to it or in discussing it at all. I certainly didn't. Why should you?
I have never suggested that any player should never run a single specialist or a single cottage depending on the choice of economy. A better view on the dichtomy is, all other things being equal, do I farm the tile or do I cottage it? I have specialised cities for commerce or GP countering the rest of the economy in each case, and only a very foolish player would not run them.
Ah, but where's the break point for each and the factors that promote one over the other, eh? There's the rub.
The thing with Specialists is that you CAN have too much of a food surplus at times such that it overwhelms your building capacities, and this is especially true before Renaissance and without Caste. I think everyone's had, at one point or another, had the opportunity to settle a Flood plains rich site, and that's always got lots of food.
To me, floodplains are a definite push towards cottaging, particularly if it's not my capital city. Even in my capital, I tend to cottage such tiles anyway. The health limits can lower your total max cap (although that's debatable) and the food excess makes up for not farming it.
Too, grasslands without fresh water access are really mostly useless in the classical era if you're not going for the Cottages, and in that instance, I usually try to arrange for some fresh water tiles or a food resource.
The things that would encourage me to go for Specialists is a site with lots of Forests (for increasing the health cap) lots of fresh water, and lots of grasslands, or limited tiles.
Thoughts?
There are other developments in BTS as well. I gather than some improvements now grant you free specialists. While a CE can get these as well as an SE can, if you've geared your Civics and wonders to promote Specialists, why then free Specialists are more of a boon to you than otherwise, no?
One other factor: people keep assuming that you'll use a GP to lightbulb. Why not settle it? A settled GS provides 1

and 6

forever, free! If an SE intensive economy can get this sooner and has more, wouldn't this is a major benefit, especially with the right Wonders and under the right Civics?
Pacifism, as well, would boost an SE's primary and secondary GP farms.