标题转自ISIS今年全长《In the Absence of Truth》。著名的金属资讯站metal-archives.com将ISIS归入“泥浆金属”（Sludge Metal）这个分类之下，而不是另一更为人熟知的“后金属”（Post Metal）。
如果有时间和兴趣，我会找几支“泥浆金属”的代表乐队来比对一下，不过现在的标题纯粹来源于文字资料和听感。网上对这一类别的描述是“90年代美国地下摇滚的一种，沉重，缓慢，噪音化”。ISIS的“另一面”表现在他们对传统乐风的反叛上：噪音化被旋律所中和；实质是，噪音，如果以灰野式的日系吉它噪为参照，在ISIS的中后期作品中是遁去的。缓慢则非一味放慢节奏而是整体声墙所营造的滞重感；这可能是人们将他们和厄运金属相提并论的原因。当然歌词的失去主题也不无关系。metal-archives应该也是注意到了这一特点，所以在ISIS的归类上使用了更详细的“氛围泥浆”。
真实是缺失的，泥浆对ISIS而言也不是必要的。
在自己第四张全长里ISIS削弱了此前的攻击性，变得更为内敛。这反而使他们变得更为特别。由一种新风格的开创者（例如后金属）到自己特色的深潜，这说明他们没有停留于既得之上而沾沾自喜。对音乐创作而言，这一态度是区分商品和作品的主要标准（个人认为）。ISIS有数量不菲的拥趸，在这种情况下求变而非守成是值得尊敬的。这张全长初听冗长，再听则不乏可激赏的细部。对比于分支计划红雀（Red Sparowes）每张仅靠一曲取胜的表现，ISIS无疑更胜一筹。除了封面实在不知所云。（road,2006.10.25）
Isis
In the Absence of Truth
Label: Ipecac
Release date: 31 October 2006
www.ipecac.com
www.sgnl05.com
www.metal-archives.com/band.php?id=4844
Track:
1. Wrists of Kings 7:45
2. Not in Rivers, But in Drops 7:48
3. Dulcinea 7:11
4. Over Root and Thorn 8:31
5. 1000 Shards 6:18
6. All Out of Time, All into Space 3:04
7. Holy Tears 7:04
8. Firdous E Bareen 7:51
9. Garden of Light 9:17
1:04:49
"In The Absence Of Truth", Isis’ fourth album for Ipecac, showcases the masters of epic post-metal adventurings at the height of their sublime powers; a nine-track opus of Noise, clarity and colour, the album sees Isis take a more restrained, brooding approach than on its predecessor "Panopticon, with the effect that the record’s periodic grinding assaults are of more fearsome intensity than ever. Isis have here come full-circle, inspired by the developments in avant-metal and Post-Rock that they themselves kickstarted with their early releases; here the traces of Shipping News’ mournful guitar soundscapes merge with the churning thunder of cutting-edge metal acts like High On Fire to generate a gripping, widescreen journey that is still unmistakeably Isis. They remain peerless in their ability to captivate and transfix as they guide the listener through the complex pathways of their hypnotic, subterranean journeys.
