Oops. I guess I should have been more specific. What I ended up saying was definitely wrong! This is more like what I should have said: If you are building a road from one point to another with a set of already stacked workers, it is marginally more efficient to never move ahead of the closest tile in which a road still needs to be built. On grasslands, at least, the workers will finish the total job on the same turn and will be in the same positions, but the stacked method causes most of the roads to be built sooner, thereby gaining their bonuses sooner. Of course, it's not highly likely that you're building a point-to-point road on tiles that need improving and are being worked. However, if you have other units following the workers along the road they're building, they will get where they're going quicker if you finish the road one tile at a time. Additionally, if some emergency arises which requires you to retreat your workers, keeping them as stacked as is necessary to complete the road one tile at a time will allow you to retreat them faster and may save some of them from being destroyed. However, for building improvements around a point (city) instead of from point-to-point, the single-worker-per-tile method is typically faster (by an average of 33%) and at least 10% more efficient (in terms of improvement-benefit-turns). Anyway sorry about the mix-up, I just wasn't thinking while I typed that post too fast. PS.. What about my other tips? Besides most of them being pretty obvious.. Are others of them wrong? Or are you just trying to be coy in telling me they're lame??