The phrase "ambitious theory" is correct and usable in written English.
It can be used to describe a theory that is bold, innovative, or seeks to achieve significant goals or insights.
Example: "The scientist proposed an ambitious theory that could revolutionize our understanding of climate change."
Alternatives: "bold theory" or "innovative theory".
Around the same time, in his journal, Emerson was experimenting with a more ambitious theory.
By 1930 Eddington was involved in formulating a hugely ambitious theory that would combine quantum theory (which applies to the world of atoms) and general relativity (which describes the cosmos).
To explain such atrocities, he offers an ambitious theory grounded in the concept of empathy, which he defines as "our ability to identify what someone else is thinking or feeling and to respond to their thoughts and feelings with an appropriate emotion".
A more ambitious theory is IZF (intuitionistic ZF).
But her more ambitious theories of "core knowledge" have their critics.
Kandinsky's ambitious theories of abstraction, promulgated in his book "On the Spiritual in Art," published in 1911, constitute a dicier legacy.
Like many authors of these intellectually ambitious theories, she was raised in Europe and migrated to the United States before World War II.
It was precisely by struggling, and occasionally blundering, with basic definitions of space and time that great scientists like Newton and Descartes made crucial progress in framing less ambitious theories, he said.
All the while, the progressive specialization of scientific disciplines and specific technical challenges triggered educational and research support for interdisciplinary projects, away from the traditional intellectual ambitions of global integration, from specific new projects to ambitious theories such as systems theory (Klein 1990).
If the troubled history of its institutionalization served to call psychoanalysis into question in certain quarters, so too did its founder's penchant for extrapolating his clinical findings into a more ambitious general theory.
The most ambitious such "theory of everything," which portrays particles as strings wriggling in 10-dimensional space-time, seems to preserve the matter-antimatter symmetry, but theorists do not really understand why.
