The phrase "a mere system" is correct and usable in written English.
It can be used to emphasize the simplicity or insignificance of a system in comparison to something more complex or important.
Example: "While some may view it as a groundbreaking innovation, to me, it is just a mere system designed to automate basic tasks."
Alternatives: "just a system" or "simply a system".
Jewish thinkers often considered natural science a mere system of hypotheses, which was capable of grasping only the superficial appearance of things, and was subordinate to the absolute truth offered by the Torah.
One can ask whether space is (a) a real thing a substance a thing that exists independently of its inhabitants, or (b) a mere system of relations among those inhabitants.
This essay specifically explores the commitment of both Leavis and Wittgenstein to the idea of "the life of language": to the idea of language as deeply involved in the constitution of "human worlds," rather than a mere system of notation for the recording of natural regularities.
For example, consider the problem of incongruent counterparts: those who think space is a mere system of relations struggled to explain our intuition that we could distinguish a world containing only a left hand from a world containing only a right hand.
In brief: for Schlegel, as for Novalis or Schleiermacher, language could not be reduced to a mere system of signs and any account of the origin of language had to be able to integrate the two apparently opposite aspects of it.
Last night's episode of "Girls" was, instantly noticeably, not directed by Lena Dunham; the result was, for the most part, a mere delivery system for Dunham's screenplay.
The resources it has devoted to Seoul make the rest of South Korea seem almost like a mere support system for that 24-hour high-rise megalopolis of 25 million people, built over the rubble of the modest Japanese colonial city it had been before the second world war.
The research behind this paper has been triggered by the following questions: Can a mere hydraulic system be a feasible alternative when it comes to the hybridisation of railcars with hydrodynamic power transmission?
This spread like wildfire and led Netscape's founders to speculate (hubristically) that the browser would eventually become the only piece of software that computer users really needed – thereby relegating the operating system to a mere life-support system for the browser.
Recent findings indicate that the CSF circulatory system is not a mere passive drainage system for the brain, but is involved in neuroimmune regulation [ 1- 3], cerebral detoxification [ 4], and cerebral delivery of various endogenous or exogenous molecules [ 5- 7].
A generalist didn't do mere systems integration.
