In the "Explain Like I'm Five" subreddit, a user asked a simple question about wine. "Why is it that everything can [be] tasted in the wine from the climate to the soil, but pesticides are never mentioned? How much do pesticides [affect] wine?" This question set off one of those threads that serves as a reminder why you should pop into Reddit.
The user indigostrudel, a wine maker, came back with several long answers and basically turned the thread into an impromptu AMA where he shared thoughts on sommeliers, what flavors are easy to identify in wines, and why the power of suggestion plays a big role in how wine is perceived.
He started by addressing the original question, but his "bullshit propagated by sommeliers" comment turned the thread into a fiery cauldron of grape debate. indigostrudel called terroir a "concept propagated by the French to explain why their wine is superior to other regions' wines," and got even feistier, saying, "Somms are reticent to accept that their magical terroir is simply some bacteria and yeast." It's a dense comment, but check it out for yourself.