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Naïve physics
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Naïve physics or folk physics is the untrained human perception of basic physical phenomena. In the field of artificial intelligence the study of naïve physics is a part of the effort to formalize the common knowledge of human beings.
Many ideas of folk physics are simplifications, misunderstandings, or misperceptions of well understood phenomena, incapable of giving useful predictions of detailed experiments, or simply are contradicted by more thorough observations. They may sometimes be true, be true in certain limited cases, be true within a large degree of approximation, or predict the same effect but misunderstand the underlying mechanism.
Examples
Some examples are:
- What goes up must come down.
- A dropped object falls straight down.
- A coin will hit the ground before a feather when both are dropped at the same time from the same height.
- An object is either at rest or moving, in an absolute sense.
- Two events are simultaneous or they are not.
The ideas that the world is flat, and that the sun and moon orbit the Earth (the geocentric model), were also, until about 2000 to 500 years ago, part of mankind's commonsense understanding of the world.
These and similar ideas, in some cases too obvious for anyone to think of questioning them, were the basis for the first work in formulating and systematizing physics,
e.g., by
Aristotle and the medieval
scholastics. In the modern science of physics, they were gradually contradicted by the work of
Galileo,
Newton and others. The final one survived until
1905, when it was contradicted by the
special theory of relativity.
See also
