 Despite the many contradictions and problems in Porta’s works that until recently have lead to an overwhelmingly negative assessment of his role in the history of science, more recent studies have identified Porta’s combination of artisan culture and diagrammatic methods as extremely important for later research strategies in the experimental science of the seventeenth century. As Borrelli has claimed in a series of publications, Porta’s obdurate ways of working with real artifacts in his experimental space, in conjunction with diagrams and other paper tools would, with hindsight, easily translate into what was soon to become modern laboratory practice. Even so, these efforts came comparatively late in Porta’s long life. The De telescopio remained in manuscript draft and did not represent Porta’s public persona as magus. Nevertheless these texts testify to the author’s versatility in accomodating his own endeavor to the most recent trends in early modern science. (Frangenberg 1991, Fumikazu 2011, Borrelli 2014, 2017).