If you have issues with specific assumptions and sources to cite showing how those assumptions are flawed, then you would be contributing to a productive conver

If you have issues with specific assumptions and sources to cite showing how those assumptions are flawed, then you would be contributing to a productive conversation about the article. Simply saying "Batteries are really heavy and will be exhausted of power very quickly by the continuous load from underwater propellor propulsion." when those specific points have been discussed in the article does not contribute anything to the discussions and simply makes it appear as if you did not read the article.