“Tipler has been criticized... for mixing religion with science. ...also ...for making wrong scientific assumptions. ...[I]t appears that the is accelerating and ...left to itself, will never enter the phase ...a prerequisite for the scenario ...Tipler is certainly wrong on many points that will be corrected by future scientists. But dismissing him as a crank is... like dismissing Leonardo as a crank because his aircraft sketches wouldn’t fly...”
Frank J. Tipler
More by Frank J. Tipler

“It is argued that if extraterrestrial intelligent beings exist, then their spaceships must already be present in our solar system.”

Frank J. Tipler

“[A]n intelligent species with the technology for interstellar communication would necessarily develop the technology for interstellar travel, and this would automatically lead to the exploration and/o...”

Frank J. Tipler

“[T]hat any intelligent species which develops... interstellar communication will also have... rocketry... is... a consequence of the principle of mediocrity... (that our own evolution is typical)... [...”

Frank J. Tipler

“[I]t seems likely that a species engaging in interstellar communication would possess a fairly sophisticated computer technology. ...Sagan has asserted that 'Communication with extraterrestrial intell...”

Frank J. Tipler

“I shall assume that such a species will... develop a self-replicating universal constructor with intelligence comparable to the human level—such a machine should be developed within a century, accordi...”

Frank J. Tipler