Ilium

"On an Earth profoundly changed since the departure of the Post-Humans centuries earlier, the great events on the bloody plains of Ilium serve as mere entertainment. Its scenes of unrivaled heroics and unequaled carnage add excitement to human lives devoid of courage, strife, labor, and purpose. But this eloi-like existence is not enough for Harman, a man in the last year of his last Twenty. That rarest of post-postmodern men - an "adventurer" - he intends to explore far beyond the boundaries of his world before his allotted time expires, in search of a lost past, a devastating truth, and an escape from his own inevitable "final tax."" "Meanwhile, from the radiation-swept reaches of Jovian space, four sentient machines race to investigate - and, perhaps, terminate - the potentially catastrophic emissions of unexplained quantum-flux emanating from a mountain-top miles above the terraformed surface of Mars."--BOOK JACKET.