Talk:Gold Mine/@comment-24399087-20140108220820/@comment-2170536-20140521043221

Actually you are both saying the same thing. The difference is that Infector101 has included the actual construction time in his calculation, and Bails-1992 (as well as the wiki) has not. The actual calculations are identical in both cases. The difference is what you consider 'catch-up time' to be: is it the time from the moment you click 'Upgrade', or is it the time once the upgrade has finished and the new mine has begun to collect?

Infector101 assumes the former, which is where he gets 10 minutes from. The upgrading mine spends 5 minutes upgrading and then 5 minutes collecting as much gold as the original mine did in the preceding 10 minutes. The wiki assumes that the 'catch-up time' is the duration required for the newly-upgraded mine to earn the amount of gold the original mine did, which is 5 minutes. To get Infector101's numbers, you simply add the 'catch-up time' and the 'upgrade time' together.

From a personal perspective, I think it makes more sense to keep it the way it is. The level 2 mine really does only take 5 minutes to produce the gold that the level 1 mine could have produced in the entire 10 minutes. Obviously it first spends 5 minutes upgrading, but that's already present in the table. As is, the two numbers are easily and separately visible in the table.