You’d think he’d have learned after the paper exploded. But the guy behind the popular Hydraulic Press Channel on Youtube, Finnish factory owner Lauri Vuohensilta, decided to put paper products to the test again and crush a dictionary.

Mayhem ensued.

At one point, after the dust clears he laughs ruefully and says he didn’t connect his glass shield to the frame of the press because “I didn’t think the book is very dangerous.”

Now, we all know. Books are very dangerous.

In a game of Rock, Paper, Hydraulic Press, we’ll choose paper every time.