Also just my 2-c worth:
Nor do I know why the standard changed. Perhaps it had something to do
with
the easy of setting full justification using a word processor, or the
variety
of fonts that word processors gave users, or with the increase in the
"online" display of documents where two spaces after a fullstop don't
necessarily improve the readability of a document. Or maybe it was just a
time/motion thing - one less keystroke per sentence... ~shrug~ Who knows?
I don't believe the 2-spaces thing was universal even on typewriters,
although it was certainly widespread.
Althogh the original Word Processing departments were probably mostly
staffed with people who came from a "typewriter" background, I'd suggest
that WP practices were actually driven by people using personal computers
and WP in the 1980s with no previous typing training. (This is certainly how
things developed in the organisations I worked for at that time). Also, with
most packages, even today, you have to have one space to allow the package
to do its justification thing, but AFAICR in some packages having 2 spaces
sometimes resulted in far too much space - perhaps it was when fixed-pitch
type was being justified. We created a lot of documents with material coming
from various authors/typists and frequently had to fix incoming material to
conform to a one-space standard.
If you really took the notion of separation of content from presentation to
the next level, you'd get rid of that space althogether and let the WP
package insert the necessary space. But then you'd probably have to
distinguish between end-of-sentence markers and other uses of periods such
as "abbreviation terminators". In the end you woud presumably also get rid
of the period and mark each sentence with some kind of property like
"standard", "question", "exclamation". Although I can't see this happening
in everyday WP, I presume that that is already being done by organisations
building reusable/translatable textbases and presumably suitable standards
already exist.
Peter Jamieson
"Gordon Bentley-Mix on news.microsoft.com"