I'm in agreement with the other posters here, and will sum up the major points made:
1. Adam and Eve were adults, and had free will to choose. This is different from a baby, who does not know any better and is exploring his or her little world.
2. God gave them many trees from which to eat, and gave them a simple boundary of not eating from ONE tree only. What the Pearls do is set the ONE item they don't want the baby to have in front of them and essentially taunt them into reaching for it, and then punish the poor thing for essentially 'obeying' the parent.
3. God did not taunt Adam and Eve with the fruit from the tree -- he did not have the tree drop the fruit everywhere for them to pick up and he did not place the fruit just from that tree in front of them for a meal.
4. Adam and Eve went to the tree, with help only from Satan, not God. Adam and Eve knew they were not supposed to eat from the tree, but they chose to anyway. A baby does not understand what the parent is expecting of them when the parent places a 'forbidden' object in front of them. God set the clear boundary up front and Adam and Eve understood right away. A baby does not.