The Memory of a 3 Year Old??!!

Ok, so eluding to my previous post and the fact that I can not remember a single thing, I am really very curious now. How is it that my offspring at the age of three can remember almost everything? I am baffled. He remembers almost everything he hears, sees, and does. I mentioned to him last night as he was about to fall asleep that we would make Halloween sugar cookies today. 8:30 this morning a munchkin bursts through my bedroom door screaming "It's time to make cookies?". I was so startled that I jumped out of bed, looked at the clock and thought I was late for work. His first thought this morning was making cookies. Mine is the bathroom and the fact that I don't have any energy to get there. How is this possible? Is it because he is only three and has no other responsibilities or real issues going on that he can memorize everything and be prepared to do fun stuff at any time of day with the energy necessary to complete this task? All I know is, I need some of that energy!