Logical Flow of Statements

• If it’s a bleep, then it’s a bloop• If it’s a bloop, then it’s a blap.Therefore…

• If it’s a bleep, then it’s a blap.

Logical Flow of Statements

• If it’s a thingy, then it’s a jiggy.• If it’s a jiggy, then it’s a flippy.Therefore…

• If it’s a thingy, then it’s a flippy.

Logical Flow of Statements

• If it’s a mammal, then it’s not a reptile.• If it’s not a reptile, then it’s not an insect.Therefore…

• If it’s a mammal, then it’s not an insect.

Logical Flow of Statements

• If it hates pigs, then it doesn’t read magazines.• If it a throws rice, then it hates pigs.Therefore…

• If it throws rice, then it doesn’t read magazines.

Logical Flow of Statements

• If my cup is on backwards, then I won’t fork the spoon.• If I don’t fork the spoon, then I my eyes will be shut.• If my eyes are shut, then the moon sips slurpies.Therefore…

• If my cup is on backwards, then the moon sips slurpies.

Logical Flow of Statements

• If you give a mouse a cookie, he’s going to ask for a glass of milk.

• When you give him the milk, he’ll probably ask for a straw.

Therefore…

• If you give a mouse a cookie, he’ll probably ask for a straw.

Logical Flow of Statements

• All mammals are animals.• Humans are mammals.Therefore…

• Humans are animals.

CONTRAPOSITIVE(CP) TIME!

Logical Flow of Statements• Every one who is sane can do Logic.• No lunatics are fit to serve on a jury.• None of your sons can do logic.

Rewrite as• If it’s sane, then it can do Logic• If it’s not sane, then it can’t serve on a jury• If it’s your son, then it can’t do logic

Logical Flow of Statementswith Contrapositives (CP)

• If it’s sane, then it can do Logic. CP: If it can’t do Logic, then it’s not sane.

• If it’s not sane, then it can’t serve on a jury. CP: If it can serve on a jury, then it is sane.

• If it’s your son, then it can’t do logic. CP: If it can do Logic, then it’s not your son.

Therefore…

Logical Flow of Statements

If it’s your son, then it can’t serve on a jury.

And more eloquently,

None of your sons are fit to serve on a jury.