|טז לֹא-תֵלֵךְ רָכִיל בְּעַמֶּיךָ, לֹא תַעֲמֹד עַל-דַּם רֵעֶךָ: אֲנִי, ה'.||16 Thou shalt not go up and down as a talebearer among thy people; neither shalt thou stand idly by the blood of thy neighbour: I am the LORD.|
I once heard (from a reliable source) that the Chazon Ish had said that while he could find a cure for cancer -if he did a worse disease would show up in its wake.
The point of it was that there is always going to be a “machaleh” for which we have no cure by which Hashem hides behind. That is getting off the subject and a whole different disccusion.
Comment by Benshaul