This concept originally started in GOTM6 when I had 275 or so extra workers that I added all to one city. Didn't think of continually adding workers until I was about half way through my game when I had 900 workers!
After this revelation, Sir Pleb may have to entirely re-write his 'maximizing score' article. Most of his ideas still hold true (grab all grassland, go for quick conquest but stop just short of domination, etc.). I could have scored thousands of more points had I more planned for this style. Right now it is 1680 A.D. My capital has over 3200 population points and I am adding over 100 pop points to it per turn! So right now my capital is worth almost 10,000 points for the internal per-turn score (regent level). I only have 1 hospital, but with no mass transit, that city has 3200 pollution icons!! I've had several turns where I had 12-13 tiles change to global warming. The sun finally turned red, never had seen that before except when nukes were launched.
Normally, awhile after you reach max territory and population/happiness your increase of points per turn actually decreases. I've been continually gaining 95 points/turn for the last 250+years. Now that I am rush buying workers (only cities that have specialists), I'm starting to increase that. When I get longevity, I should start making well over 100 points/turn.
In the capital, about 2/3 are entertainers (still considered specialists), with the other 1/3 either scientists or taxmen. With so many scientists I can have science set to 10% and still get any tech in 4 turns! Once I get longevity and mass transit I will set science to 0, so the governors turn all specialists to taxmen and I should be making over 6000 per turn profit.
I thought this would take forever, but if you turn the governor off in the capital, there isn't the long delay of when your adding each worker, the governor has to recalculate how to assign the specialists. I just turn the governor off before adding the 100+ workers, then back on before I end my turn.
I should end up with a score of 35-40,000 on this huge map I'm playing, but I bet I could have beat Aeson's 60,000 pts he got on deity, if I played this map again, or if I played on Monarch level.
The demographics screen is a mess. Notice I have a negative population and productivity. The capital had several billion people ages ago, now it should be in the trillions, but when I look at the city screen the population numbers overlap with the date.