We propose to highlight two multiple determination strategies employed in the dark matter problem, that determining the matter density parameter \(\:{\varOmega\:}_{m}\approx\:\text{0,3}\) of the standard model and that determining the acceleration parameter \(a_0\approx\:1,2\times\:10^{-10}m/s^2\) of the modified gravity model MOND. The no-coincidence argument justifies each of these strategies: it would be unreasonable to believe that independent measurements converge to the same value by error or coincidence. The independent nature of these determination procedures is questioned in this article. For each of the two parameters, we emphasise that there is a procedure that is based on a “new/independent epistemic content” against the other procedures. In this sense, both strategies (coming a priori from competing paradigms) are a success and should lead physicists to incorporate the parameter of the competing paradigm.
