"Descartes concluded he had no direct knowledge of the world. [This] applies of electronic sensors too." #readingToday

Descartes concluded that since he could experience only what the nerves from his sense organs transmitted to his brain, he had no direct knowledge of the world. Today, information technology has become our eyes and ears in many cases, and because we trust machines to be reliable, we tend to think that computer measurements must be trustworthy. Descartes' caution applies of electronic sensors too.

The Search for Certainty, Mark Burgess, 2013