Because I ate a lot of pistachio gelato and the one she told me "I think it's good" tasted like coffee (reported by multiple family members), so I had to explain her what good pistachio is.
I can totally make mistakes in which one is the best, but identifying which ones are egregiously bad is way easier
You might be surprised, but a lot of people actually like "bad" versions more.
I don't like regular ice-cream it's just too rich for me. I experimented with making aerated (well, nitrogenated) ice-cream myself 20 years ago when I had access to a lab.
I can totally make mistakes in which one is the best, but identifying which ones are egregiously bad is way easier