The phrase "a mere development" is correct and usable in written English.
It can be used to downplay the significance of a particular change or progress in a situation or context.
Example: "While the project has seen some progress, it is still just a mere development compared to our long-term goals."
Alternatives: "a simple progression" or "a minor advancement".
A far cry from claiming that incommensurable theories cannot be compared, Feyerabend explicitly and repeatedly argued that incommensurable alternatives actually offer a better means of comparing the merits of theories than the mere development of commensurable alternatives (Feyerabend 1962, 66; cf. Oberheim 2006, 235ff).
The finding shows that even in poor setting, standard health care determines maternal mortality than mere development indicators.
At the global level, he argues for international transfers and taxes beyond mere development assistance, which averages only 0.3% of the income of rich countries.
If appropriate, their implications will be linked to the political impact of these US plans and the likely reactions of the rest of the world, as other countries may answer the perceived threat inherent in the mere development of space weapons by emulating or outpacing US space militarization plans.
Assuming Shazam 2 moves beyond mere development and actually gets made (ideally within the next few years), I absolutely expect the film to play a little better than its predecessor, both due to the goodwill from the first Shazam! and from folks discovering this smaller-scale superhero romp in post-theatrical.
This is so because the mere development of nuclear weapons (especially when the U.S. has the largest nuclear stockpile in the world and Israel, with 150 nuclear weapons, is the only nuclear power in the Middle East) is not in and of itself a provocation which would justify war.
Development on the game began immediately after Morrowind shipped, giving the developers a mere five-month development cycle to release the game a very fast cycle for the industry.
Mr President, the San José dialogue process was a model of integrated policy for the European Union: to undervalue it therefore and reduce it the level of a mere experiment in development cooperation would be a mistake on our part and a mistake for the countries of the Central American isthmus.
A 1997 report, prepared for the White House by the C.I.A., found that while spying had aided China's "remarkable progress in advanced nuclear weapons design," it had saved Beijing a mere two years of development.
Having the courage to see humanity as more than a mere pastime, invites the development of true friendships.
