That covers all the bases, but it leaves absolutely no margin for untoward events, such as the axe or spear being attacked by multiple archers or the warrior exploring west of Ulundi blundering into an archer and leaving that base uncovered long term.If we do Sailing-Masonry after CS-Slingshot, GLH should come 7 turns after CS - that's revolt on turn T, Sailing finished on T+4, whip lighthouse without penalty on T+5, and chop GLH on T+6. Understood. Presume you are suggesting Construction be delayed for this.
There's one time where the returns diminish, but after that, they're constant for a long time. After Currency, we get 4 trade routes per city. In my practice games, I had a hard time getting foreign trade routes for all my cities, due to knowing only 2-3 other AI. We're killing Shaka, so we're starting at 0 known foreign cities. By the time we have 6 cities, we want to know 24 foreign cities. That's at least four additional civs within pre-Astronomy sailing limits. How likely is that? The point, I guess, is that we gain considerably for every one that we can find, and the sooner, the bigger the gain.
Well, we wont be able to build a galley til we have Sailing, and that's about 25 turns away. And GLH takes priority over a galley, I assume. GLH is in only one city, but the point is well taken: it will be awhile before we can build a galley. We could, however, build a workboat (our second, and it already has a few hammers in it) immediately after a second axe is completed in PHcity, and I prefer that tactic.
What if we use the spear to fortify next to the copper; the axe roams the forests south of Ulundi to stop workers from chopping or roading (and if he's built a city next to the horse, axe can still stop the horse hook-up); one warrior goes to pop the hut, if it's still there, and continues to explore that peninsula; the warrior that is currently guarding the copper explores the land west of Ulundi.
This decision on whether to build an axe or workboat next in PHcity seems pretty important, so I'm not going to continue play until I know that I can't win the arguement. My Saturday morning just got freed up, anyway.