Challenge 3: Why Object Mode Scaling Doesn't Actually Change the Mesh — Solution Walkthrough

The answer:

Per this chapter's own warning box, Object Mode's own Scale transform
only changes a stored scale value applied on top of the object's own
unchanged mesh data — the underlying geometry itself never actually
changes size internally. The object visually appears twice as large,
but its actual mesh data remains exactly what it was before scaling.

Why this distinction matters:

The student's assumption conflates "looks twice as big" with "is
internally twice as big," but this chapter draws a clear line between
the two. Object Mode transforms are a separate layer of information
sitting on top of the mesh, not a modification of the mesh's own
stored vertex positions.

Why this matters for later chapters:

Per this chapter's own material, several tools introduced in Blender
Advanced (modifiers, UV unwrapping) expect an object's scale to be
"applied" — reset to a neutral 1.0 value with the visual size baked
permanently into the mesh — to behave correctly. An un-applied scale
value can produce confusing, unexpected results with those later
tools specifically because the mesh's own actual data still doesn't
match the object's visible size.

WHY THIS WORKS AS AN ANSWER
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This exercise checks that Object Mode's own Scale transform is
correctly understood as a separate stored value layered on top of
unchanged mesh data, not a permanent change to the mesh's own actual
geometry.