The ability to predict
Our way of describing the natural law,
e.g. with an equation
that we write on a piece of paper,
reflects only roughly that which is prescribed by the Natural Law.
The accuracy of the description of
what is actually happening is limited.
This approximate description though is
extremely useful as
it provides us
with the ability to make a prediction.
That is the way all applications are made:
We plan, say, the
construction of an aircraft and we predict:
This machine will be able to take off with a load of 60 tons
and reach airspeed of 700 km/h.
construction, during the test flight, we note usually
that we have erred only slightly. The machine carries 59.7 tons
and it reaches 705 km/h.
Our ability to forecast varies from case to case.
We can predict the
motion of a planet in
the solar system with great accuracy;
the movement of a leaf falling from a tree
The more we study
the greater is the accuracy of our
We correct our expression of the law,
for example by
introducing an additional
factor into our equation, and we measure
more accurately the initial conditions which
sometimes affect the result considerably.
Sometimes we may need to change
the whole formulation
our perception of the phenomenon
which does not mean that we should give
special significance to this event.