Sometimes large scale experiments over a long period of time need
to be conducted
The results from scientific surveys are only
valid for that area and that period of time the surveys were conducted.
Often we want to explain phenomena that occurs in vast areas, over long periods of time and where it is very
difficult to work.
But it is only when we can actually conduct experiments at vast areas, over a long enough period and overcome practical difficulties with the experiments,
that we are able
to test such comprehensive explanations. Certain explanations can be tested without comparing
several manipulated and unchanged control areas, but when this is not possible
we have to satisfy ourselves with opinions. Theories remain as opinions
until scientific methods have shown them to be incorrect.
Knowledge through Aquascope
It is difficult being definite about our
knowledge of the sea because:
1. The number of units (e.g. individuals) in the sea is so vast that scientists
have to use statistics to show probability.
2. It is difficult conducting scientific surveys without there being mistakes
in all the integral parts of a survey.
3. Compared to what we would like to know and understand about the sea,
correctly executed surveys are few.
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