Challenge 2: A Stroke Looking Proportionally Thicker After Resizing — Solution Walkthrough

The answer:

Per this chapter's own warning box, this is the expected result of a
"scale strokes and effects" setting not being enabled (or not doing
what the colleague assumed) when the shape was resized. If that
setting is off, resizing the shape smaller leaves the stroke weight
fixed at its original thickness, so the same absolute stroke width now
takes up a larger proportion of the now-smaller shape — which reads
visually as a proportionally thicker stroke.

Why this isn't a bug:

The stroke weight genuinely didn't change in absolute terms — only the
shape around it got smaller. The stroke looking thicker relative to
the shape is a direct, correct consequence of scaling the shape
without also scaling the stroke, not an unexpected malfunction.

What the colleague should check:

Enabling the "scale strokes and effects" option before resizing (or
checking whatever the equivalent setting is called in whichever
application they're using) would scale the stroke weight down
proportionally along with the shape, keeping the stroke looking
visually consistent relative to the shape at any size.

WHY THIS WORKS AS AN ANSWER
------------------------------
This exercise checks that a proportionally thicker-looking stroke
after resizing is correctly traced back to a stroke-scaling setting,
rather than assumed to be unexpected or incorrect behavior.