[abysmalpoptart]

zeon, the only problem with that math is that the more energy you use, the less effective it is. theres a whole there somewhere, i'm not sure how to fix it. also, its not quite accurate, because i was getting about 85 to 90% trains when i first got my midlan house with like 11 endurance, and thats 825 happiness (Which should be 82.5% on its own..)

you need a midlan house and 13-14 endurance to get 100% trains, or a ranch and 15-16 endurance to get 100% trains

thats 50 development points for 50 energy.