Vocenoctum said:
The problem with this discussion is that folks seem unwilling to let any magic item be mundane.
I don't think that anyone is saying that, either.
Saying that magic has the potential to be something other than "predictable technology" -- and that this has always existed within D&D -- isn't the same as saying that every potion has to be a special snowflake.
"Magic items are not wondrous, and cannot be made to be so within the framework of the game" is an all-encompasing, extreme statement. "Magic items
can be wondrous, and
can be something other than predictable technology" is not.
The first statement says that all things X (magic items) fall into category Y (predictable technology). This is akin to the statement "All birds fly." Saying that it is untrue that all things X fall into category Y does not imply that no things X can fall into category Y. This is akin to the statement "Not all birds fly."
For the first statement to be true ("All birds fly.") it is necessary that the second statement is not true ("Not all birds fly."). However, for the second statement to be true, the first statement can be true (but doesn't have to be true) by changing the "All" to "Some". In otherwords, the second statement says that set X is larger than (but not necessarily exclusive of) category Y.
The acknowledgement that some items X fall outside of category Y carries with it the inherent proposition that knowing that an item is in set X doesn't mean that you know it is in category Y. The degree to which category Y encomases set X partially determines how safe an assumption that X = Y is in any given case, as does the degree of potential consequences of being in error.
Magic in D&D (regardless of edition) can run in a spectrum from "X always equals Y" to "X sometimes equals Y". The DM can forbid spellcasting classes (easier in earlier editions!), and change the casting rules, but I would argue that D&D
never includes the proposition "X never equals Y".
RC