Whether digital computers can eventually be as intelligent as humans
has been a topic of controversy for decades. Neither side of the debate has
provided solid arguments proving this way or the other. After reviewing the
contentions, we show in this article that machine intelligence is not
unlimited. There exists an insurmountable barrier for digital computers to
achieve the full range of human intelligence. Particularly, if a robot had a
human’s sentience of life and death, then it would cause a logical contradiction.
Therefore, a digital computer will never have the full range of human consciousness.
This thesis substantiates a limit of computer intelligence and draws a line
between biological humans and digital robots. It makes us rethink the issues as
whether robots will remain forever one of the tools for us to use, or they will
someday become a species competing with us; and whether robots can eventually
dominate humans intellectually.
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