This comes from a disagreement Missy and I had over something. The question up for debate:
Can one opinion have more worth than another?
I say yes, and Missy, unless I'm misrepresenting her position, says no.
See, I know almost nothing about classical music. So if I and a professor of music go to a classical concert, my opinion on how well the orchestra was playing (it's almost impossible to tell the difference between "mediocre" and "excellent" without a lot of technical knowledge) will have much less worth than his.
Another example. A friend of mine is a biologist. He's performing an experiment. I think it will turn out X way, he thinks it will turn out Y. Guess whose opinion has more worth?