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Comments:
<0> I mean whatever I want to mean
<0> !
<1> .. yessir!
<0> Attaboy
<2> heh
<1> now I have to figure out truth tables so I can do my homework
<0> What's to figure out
<1> don't know yet
<0> A ~A
<0> B
<0> ~B
<0> Or something
<1> oh is that all?
<0> http://en.wikipedia.org/wiki/Truth_table
<1> yea i was looking at that at work
<3> good morning
<1> but.. *looks again* thanks
<0> Well, look at your book, not wikipedia
<0> There are a variety of applications of that sort of thing
<1> our book doesn't actually cover that
<0> Oh
<1> it's Programming Game AI by Example
<2> meh
<1> actually it's only reccomended
<1> we don't need a book
<1> er maybe we do
<1> but it's not required
<1> there we go
<0> http://www.softwareforeducation.com/sms32v50_manual/380-TruthTables.htm
<1> meh?
<0> Interesting, no book
<1> yea, just two "reccomended readings"
<0> You got both, though, right?
<1> one so far
<1> it's the first week of the quarter
<0> Heh
<1> the other is... "Artificial Intelligence: A Modern APproach"
<0> Beats the postmodern approach
<1> hmmm
<0> !
<1> what >_>
<0> Philosophy humor
<1> this seems stupid
<1> but... the hardest thing about the truth tables so far for me is...
<1> what the hell is a and b?
<1> i just see oh A: 0 0 1 1 B: 0 1 0 1
<0> Ever take a logic course?
<1> nope
<0> Digital logic or anything?
<1> nada
<0> Okay, let me check something quick, I might have a great book recommendation for you
<0> As well as an answer, but let me make sure the book covers it first
<1> ok
<0> Ehh, the book doesn't cover it easily
<1> boooo
<0> So I won't recommend the book entirely, but take a look at it if you see it somewhere
<0> "Code", by Charles Petzold.
<1> what year is it?
<1> published^
<0> http://www.amazon.com/gp/product/0735611319/qid=1137308225/sr=8-1/ref=pd_bbs_1/102-2241841-5552133?n=507846&s=books&v=glance
<1> cool
<2> i have like 10 amazon.com boxes sitting on my floor :/
<2> proof that I give them too much of my money, heh
<0> Heh
<0> Okay, anyway
<0> You familiar with AND and OR and such as they pertain to logic, Tak?
<1> yea
<0> Okay
<0> They're used in reference to propositions
<0> In programming, that tends to mean inputs
<0> Your computer runs on voltage
<0> It only knows two states for any particular input for any particular component
<0> True or false
<0> True is usually also "high", also 5 or so volts DC
<0> False is usually "low", also no voltage
<0> True is 1, False is 0
<0> Propositional logic concerns NOT the validity of a statement as far as its truth value
<0> It concerns the validity of a statement irregardless of its truth value
<0> Here's a simple example
<0> If the sky is red, we're on Mars.
<0> Let's pretend that the sky is only red on Mars.
<2> isn't that conditional logic?
<1> CONFLICT
<1> maybe if you remove the if?
<0> Uh, honestly, I'm not sure what it's called, rdragon.
<0> I think a lot of things apply to it
<0> It's important, though, to note that we're thinking of A and B as propositions
<0> Tak, there's no conflict
<0> If the sky is red, then we're on Mars.
<0> Is that a valid statement?
<1> ok
<1> yea
<0> Okay
<0> What's its truth value?
<2> yeah, don't listen to me
<0> That is, is it true or false?
<1> from what you said, true
<0> Well
<0> I mean, what's its output.
<0> Is it true that we're on Mars?
<1> nope
<0> According to the statement
<1> yes
<0> According ONLY to the statement
<0> "If the sky is red, then we're on Mars."
<0> S -> M
<0> -------
<0> Is M true or false?
<2> you can't conclude anything from that
<0> Given no other claims
<1> yea
<0> rdragon, take duct tape and apply it to your fingers
<0> What are you saying yes to, Tak
<1> we don't know the color of the sky, yea?
<0> Right, I didn't provide that
<0> I only provided the sequence,
<0> S -> M
<0> I didn't tell you what S is
<0> Or what M is
<0> Uhhhh
<0> Wait
<0> I didn't tell you what the TRUTH VALUE of either is.
<0> But S is the proposition "the sky is red"
<0> And M is the proposition "we're on Mars".
<0> Given S->M
<1> gotcha
<0> If it's true that: If the sky is red, we're on Mars
<0> And given no other information
<0> Do you know what the truth value of M is
<0> Just answer honestly
<1> seems like it's value would be true, no matter what
<0> What if the sky isn't red?
<0> Then M (we're on Mars) wouldn't necessarily be true.
<0> The point I'm making here is
<1> then the value of "we're on Mars" is sitll true within itself
<0> No no
<0> You don't know whether it's true or not.
<1> ok..
<0> The proposition might be valid
<0> But that has nothing to do with the truth value of the components
<1> oh
<0> This is the point I'm trying to stress with you
<0> Because it's really what you asked earlier
<0> So let me take another example, and see if it rings a bell
<0> If the player is in a death state, show them on the scoreboard in greyed out text.
<0> D = Player is in a death state
<0> G = Player's name is greyed out
<0> If D, then G
<0> D->G
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