The phrase "contradictory needs" is grammatically correct and commonly used in written English.
It can be used in situations where two or more needs or desires conflict with each other and cannot coexist. For example: - Sarah's desire for stability contradicts her need for adventure. - The team faces contradictory needs – they want to finish the project quickly, but also want to ensure quality. - It's difficult to meet the contradictory needs of both staying within budget and delivering a high-end product.
It has been the lucrative but strenuous task of How to Spend It to fulfil these contradictory needs.
Another problem is that people may not be able to conceive of a solution because they have apparently contradictory needs.
The success of the next administration will rest on its ability to answer the often contradictory needs of a very divided country.
Their father's tyranny arouses in them contradictory needs to escape him and please him, a terror of his violence and a yearning for it.
For us, the main interest of the Japanese system, I submit, is the way in which it satisfies two apparently mutually contradictory needs: (a) job and income security, and (b) flexible, adaptable labor forces and labor costs.
But there's a tradeoff in designing such devices, because of two contradictory needs for an effective PV: A solar cell's absorbing layer needs to be thin to allow charges to pass readily from the sites where solar energy is absorbed to the wires that carry current away — but it also needs to be thick enough to absorb light efficiently.
For a complete explanation, both aspects, which according to classical physics are contradictory, need to be taken into account.
Condensers' contradictory need to enhance both droplet formation (requiring a hydrophilic surface) and droplet release (requiring a hydrophobic surface) is satisfied by the combination of nanostructures and an oily surface.
Giuliani's tone becomes pious, and his account of how he led the city's recovery becomes bogged down by the contradictory need both to thank subordinates and to place himself constantly at the centre of the action.
Like many public sector personnel, irrigation managers must walk a fine line between a tighter control of finance, the need for more positive active leadership and better planning of resource allocations, on the one side, and the contradictory need for more ideas from below (farmer customers), on the other.
Teeth evolve so quickly that mammal species can usually be distinguished from their molars alone [ 2], yet the tight interlocking between upper and lower teeth required for proper masticatory function creates a seemingly contradictory need for both strong developmental genetic control and extreme genetic malleability.
