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Page 9                                                                       de Silva. Intell Robot 2021;1(1):3-17    https://dx.doi.org/10.20517/ir.2021.01

               developed by humans. It is true that due to learning, the particular robot intelligence (the decision-making
               ability related to the learned knowledge) improves. Unlike humans, whose level of intelligence can
               depreciate for many reasons (physiology, lack of practice, new knowledge, new and complex environments,
               etc.), machine learning will always improve robotic intelligence. This means a chess-playing robot will
               continuously improve its skills through learning (practice) and can thereby defeat a chess champion.
               However, we have to realize that such intelligence is provided to robots by humans through control
               programs. That program will never be able to acquire all the characteristics of a human brain. For instance,
               we may question whether a chess-playing robot can also perform other tasks (e.g., caring for an elderly,
               carrying out medical surgery) unless specifically developed and trained for such activities and has the
               needed mechanical capabilities. Also, can a robot ever acquire such characteristics as common sense or
               emotions that are possessed by a human, in the same manner as in a human brain?

               Humans develop robots, and we program their controllers (brains). We can set limits, checks and balances,
               regulations, and guidelines as we wish. We should collaborate with social scientists and develop proper
               guidelines and regulations for the development and the safety and ethical use of robots. Since a proper
               ethical evaluation and certification are essential for any technology that is used by humans, this should
               properly adhere for robots as well. In medical surgery, for example, a robot will facilitate the surgical
               procedures, but they should be performed under the supervision of a human surgeon, who must have the
               capability to abort the robotic procedure immediately, if necessary.

               In fact, those who fear AI simply fear a black box! In order to make a proper determination, we should
               know what methodologies are used exactly in the AI black box and how those methodologies are
               implemented and operated. So, we should explore the black box carefully and in detail (with the help of
               experts who are knowledgeable in the subject) and only then indicate what methodologies in the AI black
               box might be dangerous. Then other experts will be able to respond intelligently and in an informative
               manner.

               4.1. Characteristics of intelligence
               Before exploring AI itself, let us examine intelligence. No precise definition exists for intelligence. They are
               the external characteristics and capabilities (that we observe from actions) that enable us to claim whether
               an entity (for example, a robot) is “intelligent”. Essentially, the outward characteristics define intelligence.

               The characteristics of intelligence include sensory perception; pattern recognition; learning (i.e., knowledge
               acquisition, which is extremely important for intelligence); inference (i.e., making decisions) from
               incomplete information; inference from qualitative or approximate information (this is commonly used in
               “qualitative reasoning” as in fuzzy logic or fuzzy reasoning); ability to deal with unfamiliar situations;
               adaptability to new, yet related situations (through “expectational knowledge”. For example, a human is able
               to expect the nature of an environment, like a classroom, even when encountering that environment for the
               first time); inductive reasoning (people must have done this in high school mathematics when proving a
               mathematical result “by induction”); common sense; display of emotions; inventiveness; and self-awareness
               (i.e., knowing their own capabilities).

               A simplified model for the dynamics of intelligence is shown in Figure 4. The intelligent preprocessors are,
               in fact, learning modules. They enable one to gain knowledge by “learning” from information and also
               achieve expertise by further learning through knowledge (including practice). The achieved knowledge and
               expertise can depreciate for various reasons (including environmental and biological) and also can become
               outdated. Even though intelligent preprocessing or learning is vital in this model, it is unlikely that machine
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