2dimes wrote:I always thought "virtual" meant close to real or almost. Was it actually another word for real at some point?
I like the info about "decimate" never looked into it. Was it a good thing at some point? I only ever remember hearing/reading it used as a term for battle. "They were decimated at..."
Yeah, that's the (wrong) way people tend to use the word nowadays -- when the army is completely smashed and almost annihilated. It drives me nuts, because it was never meant to represent annihilation. Decimation was a very specific punishment under the Roman Empire. When a village was disloyal, they would march into town, line up all the men single file, and kill every tenth one. One-in-ten. DECI-mate.
The use by lazy authors of "decimate" as a synonym for "annihilate" is particularly annoying because the punishment of decimation was specifically designed to AVOID annihilation. Previous Empires would punish disloyal villages by simply killing all the men, raping all the women, and selling the children into slavery. The Romans were trying to send a message that they were not barbarians, that they were limited by the rule of law and would exact a painful but strictly limited type of punishment.
The meaning of virtual hasn't really changed much. It has always meant "just as good as the real thing." In Roman times, when a gladiator was called "Heracles virtualis" it meant he was
just as good as Hercules, or more literally "possessed of the virtue of Hercules". It
never meant that he actually
was Hercules. In the 16th and 17th century, when optics was becoming a science, lensmakers made the distinction between a "real" image (composed of light coming straight from the object) and a "virtual" image (composed of light that has been reflected from an inner surface). Again, the virtual images was "just as good as" the real thing, but not exactly the real thing. The use of the term in computer imagery comes directly from its use in optics.