"Wretched" is very raw and thrashy, but there are moments in it that hint to future greatness. I'd say it's like witnessing the universe forming, so it does have it's historic importance if you dig "Blues" and "Sky". I don't have the love that everyone else has for "Circus" because it's completely devoid of the ground-breaking energy of the previous two classics, the vocals are for the most part buried in the mix, and it's way to mellow. But because of this, some stoners swear by it.