Turing test Kurzweil (optimist) about whether a computer will pass a lengthy Turing test by the year 2029. During the Long Now Turing Test, each of three Turing test judges will conduct online interviews of each of the four Turing test candidates (i.e., the computer and the three Turing test human foils) for two hours each for a total of eight hours of interviews. The bet specifies the conditions in some detail. 1990 marked the fortieth anniversary of the first publication of Turing's "Computing Machinery and Intelligence" paper, and, saw renewed interest in the test. Two significant events occurred in that year:
Turing completeness it is impossible to determine whether this characteristic will hold. This impossibility poses problems when analyzing real-world computer programs. For example, one cannot write a tool that entirely protects programmers from writing infinite loops, or protects users from supplying input that would cause infinite loops. One can instead limit a program to executing only for a fixed period of time (timeout), or limit the power of flow control instructions (for example, providing only loops that iterate over the items of an existing array). However, another theorem shows that there are problems solvable by Turing-complete languages that cannot be solved by