A glass chamber made air something investigators could alter and examine. Leaks, skilled operators, animal trials and written reports shaped what the results could establish.
The Fabrica made anatomy something readers could inspect on a page. Its achievement joined dissection, drawing and argument—and depended on more than one author’s eyes.
A few points of light beside Jupiter became a powerful argument. The work began with lenses, repeated observations and learning when an instrument could be trusted.
