Suffer-iness

Here's Stephen Colbert's take on evil:

Wacka Wacka

When a philosopher announced that the title of his talk was “Why is there Something rather than Nothing?” Sydney Morgenbesser said to the man sitting next to him, “If there was Nothing he would still complain.”

-from Gerald Dworkin's list of philosophy quips

I'm Certain I'm Doubting

Here are some links related to our discussion of knowledge from class.

• What are the philosophical implications of the movie The Matrix?
  
• Can we be abolutely certain of math truths like 2 + 3 = 5? This cartoon dinosaur says we can't!
• Here's an audio interview about Rene Descartes's famous argument that he's certain he exists.
  
• Most people don't take skepticism seriously because skeptical scenarios seem so unlikely. They're crazy, right? But Nick Bostrom argues that the probability we're living in the Matrix may be a lot higher than we think.
• (Here's a more advanced version of Bostrom's article, along with a dinosaur comic on it.)
• Here's my favorite argument for widespread skepticism. (pdf)
• The search for truth is tough. Let's get the FBI on the case!
  
• Optical illusion time! Here is a pair of collections of Julian Beever's sidewalk art that looks three-dimensional when viewed from a certain angle. Here's one of his creations:

By the way, if you have any links you think I or others in class might find interesting, let me know. And feel free to comment on any of these posts.

DaffyDuctive? Really, Sean?

Here's a few dumb things about the arguments we discussed in class this week. First, inductive arguments. Here's a video of comedian Lewis Black describing his failure to learn from experience every year around Halloween:


And here's a stick figure comic with a bad inductive argument. What's bad about it? (Let us know in the comments!)

Finally, in honor of abductive arguments, here's a dinosaur comic murder mystery.

Evaluating Deductive Args

Here are the answers to the handout on evaluating deductive arguments that we did as group work in class. Perhaps I should have titled the handout "So Many Bad Args!"

1) All kangaroos are marsupials.
All marsupials are mammals.
All kangaroos are mammals.

P1- true
P2- true
structure- valid
overall - sound

2) (from Stephen Colbert)
Bush was either a great prez or the greatest prez.
Bush wasn’t the greatest prez.
Bush was a great prez.

P1- questionable ("great" is subjective)
P2- questionable ("great" is subjective)
structure- valid (it's either A or B; it's not A; so it's B)
overall- unsound (bad premises)

3) Some people are funny.
Sean is a person.
Sean is funny.

P1- true (we might disagree over who specifically is funny, but nearly all of us would agree that someone is funny)
P2- true
structure- invalid (the 1st premise only says some are funny; Sean could be one of the unfunny people)
overall- unsound (bad structure)

4) All email forwards are annoying.
Some email forwards are false.
Some annoying things are false.

P1- questionable ("annoying" is subjective)
P2- true
structure- valid (the premises establish that some email forwards are both annoying and false; so some annoying things [those forwards] are false)
overall - unsound (bad first premise)

5) All bats are mammals.
All bats have wings.
All mammals have wings.

P1- true
P2- true (if interpreted to mean "All bats are the sorts of creatures who have wings.") or false (if interpreted to mean "Each and every living bat has wings," since some bats are born without wings)
structure- invalid (we don't know anything about the relationship between mammals and winged creatures just from the fact that bats belong to each group)
overall- unsound (bad structure)

6) Some dads have beards.
All bearded people are mean.
Some dads are mean.

P1- true
P2- questionable ("mean" is subjective)
structure- valid (if all the people with beards were mean, then the dads with beards would be mean, so some dads would be mean)
overall- unsound (bad 2nd premise)

7) This class is boring.
All boring things are taught by Sean
This class is taught by Sean.

P1-questionable ("boring" is subjective)
P2- false (nearly everyone would agree that there are some boring things not associated with Sean)
structure- valid
overall- unsound (bad premises)

8) All students in here are mammals.
All humans are mammals.
All students in here are humans.

P1- true
P2- true
structure- invalid (the premises only tell us that students and humans both belong to the mammals group; we don't know enough about the relationship between students and humans from this; for instance, what if a dog were a student in our class?)
overall- unsound (bad structure)

9) All hornets are wasps.
All wasps are insects.
All insects are scary.
All hornets are scary.

P1- true!
P2- true
P3- questionable ("scary" is subjective)
structure- valid
overall- unsound (bad 3rd premise)

10) All students in here are humans.
All humans are shorter than 10 feet tall.
All students in here are shorter than 10 feet tall.

P1- true
P2- true!
structure- valid (same structure as arg #1)
overall- sound

11) If Sean sings, then students cringe.
Sean is singing right now.
Students are cringing right now.

P1- questionable (since you haven't heard me sing, you don't know whether it's true or false)
P2- false (I'm not singing now!)
structure- valid
overall- unsound (bad premises)

12) If Sean sings, then students cringe.
Sean isn't singing right now.
Students aren't cringing right now.

P1- questionable (again, you don't know)
P2- true
structure- invalid (from premise 1, we only know what happens when Sean is singing, not when he isn't singing; students could cringe for a different reason)
overall- unsound (bad 1st premise and structure)

13) If Sean sings, then students cringe.
Students aren't cringing right now.
Sean isn't singing right now.

P1- questionable (again, you don't know)
P2- true
structure- valid
overall- unsound (bad 1st premise)

14) If Sean sings, then students cringe.
Students are cringing right now.
Sean is singing right now.

P1- questionable (again, you don't know)
P2- false
structure- invalid (from premise 1, we only know that Sean singing is one way to guarantee that students cringe; just because they're cringing doesn't mean Sean's the one who caused it; again, students could cringe for a different reason)
overall- unsound (bad premises and structure)

Also, here's Tiffany's big hit:

Definitions of "Philosophy"

Here are some videos on the definitions of the word "philosophy" that we discussed in class. First, the Bobby Brown definition: Nothing says "philosophy as a worldview" like 1988 Bobby Brown.

Bobby Brown - My Prerogative
Now for the 3-year-old definition. Here's comedian Louis CK's take on the broad, fundamental questions kids ask.

Louis CK - Why?
And here's what springs to my mind when I think about doing philosophy: