“Also she had 1/2 of her left lung removed, certainly nontrivial.”
Well, not quite:
Justice Ruth Bader Ginsburg Undergoes Surgery For Lung Cancer. ... and while it means a loss of 15 to 20 percent of the lung, it “can recover,” he said, with the other four lobes taking over ...
That's not quite accurate. The left lung has 2 lobes and the right has 3. She lost 20 percent of her lungs, 1 lobe out of her left lung, or 1 out of 5 lobes.