Theories
All scientific theories are basically just consensuses of postulates to guide scientific research in a search for evidentiary proof. Consequently no theory is absolute fact. In the case of the Big Bang theory we also have the problem that we are trying to figure out what happened billions of years in the past, long before any human beings were around to observe those events directly. We have lots of astronomical observations which are relevant to this theory, but it is possible to imagine more than one way to interpret those observations. That said, you should also know that the evidence for the Big Bang theory is quite strong, and no one working in the field of cosmology has any serious doubt about it. It is very well supported. But it is not absolute fact. Nothing in science is taken as being absolute. For absolute truth, you must turn to religion.
A scientific theory summarizes a hypothesis or group of hypotheses that have been supported with repeated testing. A theory is valid as long as there is no evidence to dispute it. Therefore, theories can be disproven. Basically, if evidence accumulates to support a hypothesis, then the hypothesis can become accepted as a good explanation of a phenomenon. One definition of a theory is to say it's an accepted hypothesis. A law generalizes a body of observations. At the time it is made, no exceptions have been found to a law. Scientific laws explain things, but they do not describe them. One way to tell a law and a theory apart is to ask if the description gives you a means to explain 'why'. As you can see, there is no 'proof' or absolute 'truth' in science. The closest we get are facts, which are indisputable observations. Note, however, if you define proof as arriving at a logical conclusion, based on the evidence, then there is 'proof' in science. I work under the definition that to prove something implies it can never be wrong, which is different. If you're asked to define hypothesis, theory, and law, keep in mind the definitions of proof and of these words can vary slightly depending on the scientific discipline. What is important is to realize they don't all mean the same thing and cannot be used interchangeably.
Relative and absolute dating of the rocks and the fossils near it (geology and archaeology), as well as chemical components of various surrounding areas are consistent in explaining the diversity of life as explained by theory of evolution. Evolution is also consistent with embryology, genetics, comparative physiology, biochemistry, and more. See the related link below for more details.
absolute pressure
No, because science is based off of observation. Scientists use experimentation and observation to explain the world around us. However, the scientific theories they come up with are only as good as the experiments and observations they make. When something is proven over and over again, people usually accept it as true (like the existence of gravity). However, many scientific theories have been disproven later on throughout history, meaning science isn't always 'true'.
Theories
theories :)
theories :)
theories :)
If my memory of third grade serves me, that would be a theory. Theories are based upon observations (e.g.: Observation: That guy's left side looks limp. Theory: He had a stroke) and are not absolute, as until it is tested and proven, there is no way to tell for certain if a theory is true or not.
That is correct. If the result of an experiment cannot be replicated (repeated), the theory is weakened or overturned. In addition, results in general are not absolute as it is always possible something has been overlooked that would significantly alter the theory. For example, Newton's theory of gravity was considered to be very good, and explained the motions of the planets about the sun extremely well. Except for Mercury, whose motion did not fit Newton's model. Eventually Einstein developed a superior theory of gravity (general relativity), which accounted for the motion of Mercury.
All scientific theories are basically just consensuses of postulates to guide scientific research in a search for evidentiary proof. Consequently no theory is absolute fact. In the case of the Big Bang theory we also have the problem that we are trying to figure out what happened billions of years in the past, long before any human beings were around to observe those events directly. We have lots of astronomical observations which are relevant to this theory, but it is possible to imagine more than one way to interpret those observations. That said, you should also know that the evidence for the Big Bang theory is quite strong, and no one working in the field of cosmology has any serious doubt about it. It is very well supported. But it is not absolute fact. Nothing in science is taken as being absolute. For absolute truth, you must turn to religion.
Scientific knowledge is not absolute.
The mean absolute percent prediction error (MAPE), .The summation ignores observations where yt = 0.
a French philosopher: Thomas Hobbes
It is all doubtable, testable and open to disproof. This is the strength of the scientific method; it is a heuristic. It does not lead to absolute truth. There are some basic observations that are probably undeniable for all of time, but the more speculative or theoretical a scientific principle is, the more it is vulnerable to change or re-interpretation.
It means that the observations are all close to their mean value.