David Frei decided to get to the bottom of the age-old question; is the glass half full or half empty? The vlogger documented his discovery and came to a solid conclusion on the mystery.“A couple of weeks ago, I made a response video to the ‘is water wet?’ debate. One of the comments to that video was asking whether or not the glass was half empty, or half full. Naturally, I had to take a shot at a humorous video response to that question as well”, David told Storyful. Credit: Viva Frei via Storyful