Now we can see something interesting: this optimization was enough to knock ice cream below broccoli on the action list for Jane but not for John.

这种优化足以让冰淇淋在简的行动列表中低于西兰花，但对约翰来说却不是这样。

Because we have a limited amount of energy, there's only so much we can do off the action list in a day, and we only do the actions starting from the top.

因为我们的精力有限，所以我们一天能做的事情也就那么多，而且我们只做从头开始的行动。

Because ice cream sits at the top of both of their action lists, John and Jane always end up choosing it over the broccoli when it comes time to eat a snack.

因为冰淇淋在他们的行动清单上都排在首位，所以约翰和简在吃零食的时候总是选择冰淇淋而不是西兰花。