Challenge 3: Why Spacebar-Aligned Columns Break After a Font Change — Solution Walkthrough

What actually happened:

Pressing Space repeatedly to visually line up a second column relies
entirely on every space character being drawn at exactly the same
width as every other line's spaces — which is only true for as long
as the font, font size, and any bold/italic formatting stay perfectly
consistent across every single row. The moment the document's font
changes, the actual rendered width of a "space" character changes
too (different fonts render whitespace at different widths, and even
the same font at a different size changes the space's absolute
width). Since each row's number of typed spaces was tuned by eye to
line up under the OLD font's specific spacing, every row's alignment
shifts by a different, unpredictable amount once the underlying
font's character widths change — the second column no longer lines
up cleanly at all.

What they should have used instead:

A real Word Table (Insert > Table), or Tab Stops (setting an actual
tab stop position on the ruler and pressing Tab instead of typing
spaces) — both mentioned in this chapter's own warning box. A Table
defines genuine, independent columns with their own real boundaries,
completely unaffected by anything about font rendering; a Tab Stop
defines an actual fixed horizontal position that Word aligns to
directly, rather than approximating a position through a specific
count of space characters.

Why this matters more broadly:

This is precisely the gotcha this chapter's own warning box
predicts: spacebar alignment is Excel-grid thinking ("nudge this
value into roughly the right visual column") applied to a document
model that has no fixed columns or addresses at all. Word's flowing
text model has no concept of "this content sits at horizontal
position X" the way a space count implies — genuine alignment tools
that Word actually understands structurally (Tables, Tab Stops) are
the only way to get alignment that survives a font change, a
different printer, or opening the document on someone else's
computer with different default fonts installed.