>>>It's anyone's guess whether the user will or will not know what a specific word means, but my bet would be that it's more likely that the average human (not programmer) will know what "negative" means than what >= 0 means.
>>
>>"Greater than or equal to zero" is simpler vocabulary than "negative"
>
>If that works for you, Mike, enjoy it!

I find no joy in the idea that my users occupy the section of spectrum between "illiterate" and "morons". Unless it pays reeeeeally well.