Challenge 2: Why Raster Tools Are Still Genuinely Necessary — Solution Walkthrough

The answer:

Vector graphics excel at scaling without quality loss, but that
benefit only applies to content that can actually be described as
clean, mathematical shapes in the first place. Per this chapter's own
material, a photograph's continuous, irregular variation in color and
tone has no clean shape to describe — it genuinely needs a pixel grid
to represent accurately.

Why "never loses quality when scaled" doesn't make vector universally
better:

Resolution independence is a real advantage, but it solves a specific
problem (scaling geometric or illustrative content) rather than being
a general-purpose upgrade. A friend's assumption treats "never
degrades when scaled" as the only thing that matters, when the actual
question is whether the content in question can be represented as
vector shapes at all.

Why raster and vector are complementary, not competing:

Raster Editing Fundamentals' own tools exist specifically for
photographic and continuous-tone content, while this course's own
tools exist for logos, icons, typography, and diagrams. Neither
replaces the other because they're solving genuinely different kinds
of visual content.

WHY THIS WORKS AS AN ANSWER
------------------------------
This exercise checks that vector's resolution-independence advantage
is correctly understood as specific to geometric/illustrative content,
not a general reason to abandon raster tools for photographic work.