The phrase "while in principle" is correct and usable in written English.
You can use it to introduce a point in the middle of a sentence that compares a theoretical idea to a practical one. For example: "We wanted to adhere to the letter of the law, while in principle allowing some leeway for individual discretion."
While in principle this may be effective, a broader set of sustainable design tools may be needed.
While in principle it is possible to get such a positive result, in practice it can depend on the specific proposal.
While in principle laudable, stronger rights can inadvertently assist land grabbers in clearing more forests under the guise of community development.
The results indicated that while in principle HSM can produce such a map, the spatial representativeness of the sample is important.
While in principle this goal can be met using knowledge of the electron charge density, the relationships between the density and properties are largely unknown.
While in principle, equivalence trials are preferred, non-inferiority trials may be considered if appropriately justified, such as for a medicinal product with a wide safety margin.
While in principle the drag force could be counter-balanced by an extremely small tilt of the solar sail in the polar direction, periodic adjustments are more feasible.
While in principle I think veganism is a great idea for both my health and the environment, I don't have the time or money to devote my diet to the cause.
While in principle this method is unassailable, it depends for its practical validity on the assumption that each copyist followed only one model or exemplar and generated only variants peculiar to himself.
Therefore dilution/boration strategy, while in principle an option, becomes expensive for short time changes and leads to large volume of liquid effluent, in particular toward the end of cycle.
While in principle such algorithms could be used in-lieu of a linear equation of state in a groundwater model, the computational overhead is such that the use of a more simplified equation of state is preferred.
