How did Conrad Gessner invent the pencil?

Conrad Gessner did not invent the pencil; rather, he is often credited with popularizing the use of graphite for writing. In the 16th century, he described the properties of graphite and its potential uses in his works. The modern pencil as we know it, with a wood casing and a graphite core, was developed later, around the late 16th century, when a significant graphite deposit was discovered in Borrowdale, England. Gessner's contributions laid the groundwork for understanding graphite's utility in writing instruments.