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xaratustra
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Was just thinking, is it ever possible that the same phenomenon can be fully explained by two theories that are not subset of each other?
Are There Ever Multiple Theories That Fully Explain the Same Phenomenon?
- Thread starter xaratustra
- Start date
In summary, it's extremely unlikely that both theories are equally simple with the same amount of assumptions. One would almost inevitably fall under Occam's Razor.
- #2
Drakkith
Mentor
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Of course. It's just extremely unlikely that both theories are equally simple with the same amount of assumptions. One would almost inevitably fall under Occam's Razor.
- #3
xaratustra
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Drakkith said:
true. Thanks. Now I have to think more...
- #4
cosmik debris
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Physical theories are mathematical models and for any set of given data there are an infinite number of models that fit that data. As the other poster said, one usually chooses the simplest.
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cosmik debris said:
But we need to make a distinction here between "research-front" areas versus well-known, well-accepted concepts. In the latter, overwhelmingly, there is only one description that works.
In research-front areas, we may have several competing theories trying to explain what is still unfolding. It's like you are trying to guess what's inside an opaque box. First you propose a bunch of things based simply on the observed size. Then when someone managed to pick it up, then the rough estimate of the weight will narrow down to the list of possible objects inside of it. Then someone shakes the box and listens to how it rattles, and you narrow it down some more... and so on. But eventually, practically everything settles on one, consistent description that fits and explains all the known observations.
Now it doesn't mean, later on, that description doesn't evolve as new observations and ideas come along, but the evolution of our knowledge very often leads to a single concept, not multiple, non-"subset" descriptions.
Zz.
FAQ: Are There Ever Multiple Theories That Fully Explain the Same Phenomenon?
1. What is meant by "same physics, two theories"?
Same physics, two theories refers to the concept in physics where two different mathematical models can be used to describe the same physical phenomenon. This means that both theories can accurately predict the behavior of the system, but they may use different approaches or assumptions.
2. How do scientists determine which theory is correct?
Scientists use a combination of experimental data, mathematical calculations, and logical reasoning to determine which theory is correct. They compare the predictions of each theory to real-world observations and choose the theory that best fits the data.
3. Can both theories coexist or is one considered superior?
Both theories can coexist if they accurately describe the same physical phenomenon. However, one theory may be considered more complete or superior if it can explain a wider range of observations or make more accurate predictions.
4. Are there any examples of "same physics, two theories" in practice?
There are several examples of this concept in physics. One famous example is the theory of general relativity and the theory of quantum mechanics. Both theories are used to describe different aspects of the universe, but they have not yet been unified into a single theory.
5. Is it possible for one theory to eventually replace the other?
Yes, it is possible for one theory to eventually replace the other if new evidence or advancements in technology provide a better understanding of the physical phenomenon. This has happened several times in the history of physics, as new theories are developed to better explain the natural world.