Original sentence: ) His theory gave the first insight into the importance of the shapes of ocean basins in the size and timing of tides; he correctly accounted, for instance, for the  negligible tides halfway along the Adriatic Sea compared to those at the ends.If correct, this would have been a strong argument for the reality of the Earth's motion.Kepler and others correctly associated the Moon with an influence over the tides, based on empricial data; a proper physical theory of the tides, however, was not available until Newton
Edited sentence: ) However, a side-effect of his theory is that it gave the first insight into the importance of the shapes of ocean basins in the size and timing of tides; he correctly accounted, for instance, for the  negligible tides halfway along the Adriatic Sea compared to those at the ends.Although blatantly wrong and contrary to Kepler's correct assumption about the tides as a cause of the Moon's pull, this would have been a strong argument for the reality of the Earth's motion