in theory vs from theory

The phrases 'in theory' and 'from theory' have different meanings and are not directly comparable. 'In theory' is the correct and commonly used phrase to indicate something that is supposed to happen or be true according to a hypothesis or principle. On the other hand, 'from theory' is not a standard phrase in English and does not convey a clear meaning.

Last updated: April 01, 2024 • 753 views

in theory

This phrase is correct and commonly used in English.

Use 'in theory' to describe something that is supposed to happen or be true according to a hypothesis or principle.

Examples:

In theory, the project should be completed by next month.
In theory, the plan is flawless, but in practice, it may face challenges.

Show examples from the web [+]

School teachers distinguished medicine in theory and practice.
I'm a great cook - in theory.
The office of Governor was also, in theory, made hereditary.
This attitude, which in theory suits all parties, is quickly stigmatized.
Most people subscribe to this in theory but not in practice.
But in theory, he should still be a frozen head.
Americans themselves are discovering that unlimited choice seems more attractive in theory than in practice.
So the magazine, in theory, opened like that.
Suppose in theory, you wanted to poison another.
Great in theory, but... wouldn't stop talking.
Probably because, in theory, it wasn't practical.
I know how to summon the Baba in theory...
Stem cells, in theory they can divide forever.
But I have no problem with it in theory.
But I have no problem with it in theory.
And in theory, I support that.
Which, in theory, would provide relief.
The protocol, in theory, is sound.
And then in theory, when we inject them with stem cells...
Humanity actually solved agricultural poverty a century ago, in theory.

from theory

This phrase is not a standard or commonly used expression in English.

Show examples from the web [+]

Your laboratory instruments from theory to practice.
The transition from theory to practice is slow and cumbersome.
To go from theory to practice, I have some difficult questions to ask.
Clinical Assessment in Autism: from theory to practice
Today we are moving from theory to practice.
We will now pass from theory to practice...
Unfortunately it took the Lisbon process, some six years later, to grab this opportunity and I am delighted that we have now moved from theory into practice.
Conservation agriculture: from theory to practice.
I therefore hope that the EU will move from theory to practice, and will make it possible for women to show their worth.
Ability to pass from theory to practice:
Prior to graduation, the two-week field ride takes all this coursework from theory and the classroom to practical application in a real world drilling environment.
What we must now do is move beyond the theoretical debate of concepts that are full of good intentions and move towards defining specific measures that will facilitate the transition from theory to practice.
Comparison of the results of the dimensional analysis with the known results from theory.
We must carefully distinguish from theory the operational terms (to which it leads) that are then defined by procedure and observation, not by theory.
The passage from theory to practice is, of course, in this case the result of the deductive activity of the performer, who reads and interprets the analyses.
Consequently, emphasising again that I believe in the European prospects of Albania and voting for this agreement, I believe that the time has come to move from theory to practice.
Don't you think your present discussion may be accused of shifting the emphasis from theory over to movement as in the same old theoretical framework of the left?
innovative technologies for the strengthening and the seismic retrofitting of reinforced concrete structures: from theory to practice, practical cases of realization.
I am happy to have waited so long to harvest the last Nebbiolo vineyard. The analytical data support this decision, but now we must pass from theory to practice.
The innovative structure of the book provides for a simple, efficient transfer from theory to practice.(252 pages)

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in theory vs from theory

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