Passage Summary: History shows that many great discoveries happen when people look at the information they already have from a new perspective instead of finding new facts.

Reasoning: Copernicus and Jenner achieved major scientific breakthroughs by reinterpreting existing information or shifting their focus rather than by finding new data.

Analysis: This is a 'Principle' question where the stimulus provides specific examples to illustrate a broader rule. The common thread between Copernicus and Jenner is the 'internal' shift in perspective rather than an 'external' discovery of new evidence. You should look for an answer choice that generalizes this idea—specifically, that intellectual progress often stems from the creative reorganization of existing knowledge.