What is the difference between the phrases "hypothetically speaking" and "theoretically speaking"? If one wants to make a point using an example that would likely never happen, which phrase would be more appropriate?
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A hypothesis and a theory are different - the exact differences depend on what field you are in. But “hypothetically speaking” vs “theoretically speaking” have a different set of meaning.
"hypothetically speaking” would be "if X were true what would it mean for Y".
While “theoretically speaking” means it is possible in theory but not necessarily in practice.
Hypothetically: "hypothetically speaking, what if a dinosaur came and took over the world" meaning "I know this won't happen but...." Theoretically: "theoretically speaking, I can probably win queen b" meaning "in my theory, this could happen"
theoretical: 1. Of, relating to, or based on theory.
In 'hypothetically speaking', the implication is 'This is not going to happen, though. It's only conjectural, suppose....
On the other hand, in 'theoretically speaking', the meaning is just that, you are backed by theory; you are speaking with reference to theoretical concepts; also, 'We are only dealing with the theory here, don't ask if it has any practical use, that's not in scope.'
In the given usage context of -ly speaking, there's neither an overlap not ambiguity in meaning between the words.
It's a different matter, though, that the words per se, are broad, overlapping concepts used in various senses.
An hypothesis is a testable unproven statement used to build an experiment. The theory enplanes what happened in the experiment. This is the core of the scientific method. Theoretical is used to discuss what we think we know. Hypothetical is used to discuss what we want to know. Theoretically is for when we build on what we know. Hypothetically is used for what we guess or won't admit to knowing. Speaking only adds uncertainty.
In general usage, the two words are very similar, and can both mean existing only as an idea or concept, without actual physical existence. They are often used interchangeably. To look deeper, you can take the meanings of theoretical to mean relating to or based on a theory, and hypothetical to mean relating to, or based on a hypothesis. Here is where there is subtle, but important difference, especially in the world of the scientific method.
A hypothesis is a tentative explanation to account for an observed phenomenon. The important characteristic about a hypothesis is that it has to be able to be tested. Therefore a hypothetical situation must be possible, even it is extremely unlikely.
A theory is unifying set of ideas that can be used to account and predict phenomena. They are generally a widely applicable to account for a set of proven hypotheses. The critical characteristic about a theory is that it does not have to be able to tested. This means that a theoretical situation is one that does not ever have to exist.
Therefore, I believe that the expression that best suits your needs is theoretically speaking.
protected by tchrist Feb 21 '15 at 23:50
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