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>The serifs actionally had a purpose. Early printing methods (Gutenberg, et.
>al) were crude and had problems with quality. Smudges prevailed. The purpose
>of the serifs was to act as mini inkwells.
<...>
> It was only with improved printing processes that
>san serif became a viable type option.
1 -- there's an even more likely reason for serifs: they are a vestigial
trace of the links that occur between letters in script.
2 -- It's sans serif, not san serif. (Sans means "without," in French).