Corrected entry: The tree at the top of the hill that we see twice in the Fredricksons' lifetime montage does not change size or shape, despite the passage of at least four decades. By the time Ellie is old and collapses on her way up the hill, the tree should have grown significantly but it looks the same then as it did at the beginning of their life together.
JC Fernandez
14th Apr 2010
Correction: We never see the full tree, so can make little determination as to how it may or may not have changed over time. You also assume the tree hasn't reached its maximum size or that the lower branches hadn't been pruned to maintain its shape.
JC Fernandez