Practitioners often respond that the jargon is not unnecessary because it clearly and concisely expresses an idea that might otherwise take sentences to express. I think your idea applies well to any intellectual endevour where the ideas are more important than the way they are communicated.

Larry's jokes about LZW compression of a language aren't really jokes when you think about it...

Of course, you're thinking more of the mental structures that are being built to cope with ideas rather than the way they are expressed, but there are some (like myself) who believe that there isn't much difference between what a person says and does and who/what they actually are.

Don't even get me started about my ideas on the way we treat everything in the real world as an object with defined interfaces... I'm taking an analogy a bit too far there.

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Jeremy
I didn't believe in evil until I dated it.