Challenge 2: Extending a Straight Architectural Roofline — Solution Walkthrough

Why the Healing Brush would likely produce a wrong result:

Per this chapter's own warning box, the Healing Brush's own automatic
blending with surrounding tone and lighting can incorrectly soften or
blur a hard edge that needs to stay sharp and precise — exactly the
case with a straight architectural roofline, where the edge itself is
the important detail. Blending would likely produce a slightly fuzzy
or wavy result where a crisp, straight line is actually needed.

Why the Clone Stamp is the better choice here:

Per this chapter's own material, the Clone Stamp copies pixels exactly
— texture, lighting, and shadow included, with no blending applied at
all. For a straight, hard-edged architectural line, this exact
1:1 copying is precisely what preserves the roofline's own sharp,
clean edge when extending it, rather than softening it the way
automatic blending would.

Why this is the exact case this chapter's own warning box describes:

This scenario is a direct, concrete instance of the warning box's own
named example — "cloning a straight architectural line" — where the
Clone Stamp's literal copying is the right tool specifically because a
hard edge needs preserving, not blending away.

WHY THIS WORKS AS AN ANSWER
------------------------------
This exercise directly applies this chapter's own warning box to the
exact scenario it names as an example, correctly explaining why exact
copying beats automatic blending when a hard edge is the actual detail
that matters.