Singularity is Near (2005). Of the 147 predictions, Kurzweil claimed that 115 were "entirely correct", 12 were "essentially correct", 17 were "partially correct", and only 3 were "wrong". Combining the "entirely" and "essentially" correct, Kurzweil's claimed accuracy rate comes to 86%. Daniel Lyons, writing in Newsweek magazine, criticized Kurzweil for some of his predictions that turned out to be wrong, such as the economy continuing to boom from the 1998 dot-com through 2009, a US company having a market capitalization of more than $1 trillion by 2009, a supercomputer achieving 20 petaflops, speech recognition being in widespread use and cars that would drive themselves using sensors installed in highways; all by 2009. To the charge that a 20 petaflop supercomputer was not produced in the time he predicted, Kurzweil responded that he considers Google a giant supercomputer, and that it is indeed capable of 20 petaflops. Forbes magazine claimed that Kurzweil's predictions for 2009 were mostly inaccurate, with 7 failed predictions, 4 partially true predictions, and one correct one. For example, Kurzweil predicted, "The majority of text is created using continuous speech recognition", which was not the case. Future predictions In 1999, Kurzweil published a second book titled The Age of Spiritual Machines, which goes into more depth explaining his futurist ideas. In it, he states that with radical life extension will come radical life enhancement. He says he is confident that within 10 years we will have the option to spend some of our time in 3D virtual environments that appear just as real as real reality, but these will not yet be made possible via direct interaction with our nervous system. He expounded on his prediction regarding nanorobotics, making the claim of within 20 years having millions of blood-cell sized devices, known as nanobots, inside our bodies fighting diseases, and improving our memory and cognitive abilities. Kurzweil also claims that a machine will pass the Turing test by 2029. Kurzweil states that humans will be a hybrid of biological and non-biological intelligence that becomes increasingly dominated by its non-biological component. In Transcendent Man Kurzweil states "We humans are going to start linking with each other and become a metaconnection; we will all be connected and omnipresent, plugged into a global network that is connected to billions of people and filled with data." In 2008, Kurzweil said in an expert panel in the National Academy of Engineering that solar