Subjective Assumption

I'm at my aunt's house today, and I was looking at a picture in her bathroom deciding whether or not I liked a painting. It occurred to me that of course it was a good painting, Mardy is an artist and thus she knows what she's talking about.

Then it struck me that this logic is very flawed. Because there is bad art out there and thus there must be artists with bad taste who paint it. Do not assume that just because someone specializes in an area that their opinion is correct all the time, especially in a subjective field.

Personally I think my aunt has very good taste for the record and decided that I like that painting, though I came up with that opinion on my own merits.