Press the right key for the next slide (or swipe left)
Press the left key to go backwards (or swipe right)
Press n to toggle whether notes are shown (no equivalent if you don't have a keyboard)
Press m or double tap to see a menu of slides
All circles are broken.
∀x( Circle(x) → Broken(x) )
All idols are dead.
∀x( Idol(x) → Dead(x) )
All who wander are lost.
∀x( Wanderer(x) → Lost(x) )
A square is broken
Something is square and broken
∃x ( Square(x) ∧ Broken(x))
A red square is broken
Something is red and square and broken
∃x ( Red(x) ∧ Square(x) ∧ Broken(x) )