Originally Posted by
deadpixel
Actually, they are excellent at learning from their mistakes. For example, they made the mistake of setting the last World Event back to a 10-day timer, which allowed hard working players with at least 7 farms, 2 breeding dens, 3 nests and 2 evolution chambers to complete the event without spending gold and without the need for the breeding of the optional dragon.
In changing the timer back to a 7-day one, they effectively made it impossible to complete the event without spending gold, EVEN if you managed to breed the optional dragon and even if you had 4 nests.