iAmChris = true
iAmPurple = false
iLikeFood = true
iEatRocks = false
puts (iAmChris and iLikeFood)
puts (iLikeFood and iEatRocks)
puts (iAmPurple and iLikeFood)
puts (iAmPurple and iEatRocks)
puts
puts (iAmChris or iLikeFood)
puts (iLikeFood or iEatRocks)
puts (iAmPurple or iLikeFood)
puts (iAmPurple or iEatRocks)
puts
puts (not iAmPurple)
puts (not iAmChris )
# true
# false
# false
# false
# true
# true
# true
# false
# true
# false