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This episode of "Hard Science" is brought you
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by Full Sail University.
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Hey.
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Welcome to "Hard Science," a show
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where we use just a little bit of knowledge
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about the world to bend it to our whim.
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I'm Anthony.
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I'm Tara.
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I'm Trisha.
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Trisha is on loan to us from SourceFed.
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We promised Phil that we wouldn't
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injure her or burn her or hurt her.
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I'm so happy to be on this show.
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You were a good kid growing up, huh?
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Super good kid, yeah.
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Like super nerdy, like mathletes,
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all that kind of stuff.
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Wow.
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Me too.
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Oh my god.
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We were wondering if there was a way for good, honest kids
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to fool their senses into feeling like they were high.
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To get a good, honest high.
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Just a good, honest high after a good, honest day of American
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work.
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Mm-hmm.
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So how can we do that?
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What's that way?
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Oh.
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Science, right?
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This is my part.
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That's what she does.
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Great.
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Senses are an organism's physiological capacity
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that provide data for perceptions, the stuff
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inside of us that lets us experience the stuff
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outside of us.
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And the nervous system has a different sensory system
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or organ for every sense.
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Aristotle is the man originally credited
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with classifying the traditional five senses, sight, smell,
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taste, touch, and hearing.
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It's not dangerous.
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Just keep doing it.
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He's good at this game.
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Yeah.
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In addition to those traditional five senses
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that we all learn in grade school,
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there are actually additional senses
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that control things like temperature and balance
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and pain and some internal stuff that's
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really cool like breathing and some internal stuff
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that's not cool like vomiting.
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[HIGH FIVING]
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Was that a high five for vomiting?
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Yeah.
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Wait.
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No.
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So our knowledge of the outside world
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depends on these various modes of perception.
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Which is why it's really messed up
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that they're super easy to fool.
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Keep spinning, Trish.
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We'll tell you when.
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Got it.
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Come near me, bitches.
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All right.
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Touch-- arguably the best sense of all.
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Today, we are going to be doing something called the Rubber
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Hand Illusion, and this plays around
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with the sense of proprioception,
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which is the thing that allows you to distinguish
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your physical self from the rest of the outside world.
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We have this board set up here.
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You are going to put your hand on one side of it.
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And on the other side we are going
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to drape this over this hand.
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And then we're going to do some things to the hand.
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And what's going to happen is your brain
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is going to start to associate that hand with your body,
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and you're actually going to feel
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things that aren't even happening.
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Shut up.
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Yes.
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I want you to keep your eyes focused on this hand
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the entire time.
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I'm just going to start tapping you a little bit.
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We're going to use the paintbrushes now.
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Just continue to stare at it.
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OK.
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I am.
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Oh, god.
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That was so weird.
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I'm so glad I aimed right.
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Yes.
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I feel something right here.
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You do?
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Yeah.
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Yeah.
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It's so weird.
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Basically, what happens is when you detect discrepancies
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between what you're seeing and what you're feeling,
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the visual part of your brain sort of takes over
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and it starts to associate the things that aren't actually
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happening to you with your actual hands.
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So what we have here is the miracle berry,
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the miracle fruit.
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This is from a berry from West Africa that has a protein in it
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that they discovered in the '60s that they called miraculin.
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And the reason why they called it miraculin
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is it is a miracle protein that activates the sweet receptors
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on your tongue for everything and then deactivates
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all the other receptors--
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Wow.
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--for about a half hour.
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Well, here we go, America.
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See how you feel in 10 minutes.
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Ready?
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One, two, three.
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Oh, that's so good.
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It tastes like straight up lemonade.
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Grapefruit is my most hated of all citrus.
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Really?
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What?
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Ah, dude, it's just this sour, bitter thing for grandmas.
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Oh.
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It's awesome.
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Mmmm.
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Except today.
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Except today where it tastes like watermelon.
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You guys have no idea how much I hate tomatos.
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One, two, three.
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I'm sorry.
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I'm sorry.
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And it still has a tomato aftertaste.
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I know--
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It has the tomato aftertaste.
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How does anybody like these?
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Wash that down with a little vinegar, right?
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Yeah.
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Mmmm.
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Balsamic vinegar.
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Cheers, guys.
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To your health.
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Yeah.
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That's pretty good, actually.
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No.
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No.
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My mouth is telling me I'm eating nothing but candy,
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but my stomach is letting me know what I've been eating.
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Yeah.
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I don't think this thing makes you love foods
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that you already hate.
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Fruit--
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I think is what it works best with.
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We all should've seen that coming.
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Miracle fruit for other fruit.
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Yeah.
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My mouth is so high right now.
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All right.
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So let's talk sight.
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Sometimes when you look at something,
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it's not exactly expressing what's in actual reality.
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So if you look at, say, a 2D drawing, and it appears 3D,
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that's called perspectival anamorphosis.
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So that's what we're going to play with today.
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So everybody take a piece of paper and a pen--
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Yay, coloring.
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--and trace your hand, like we're
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making a turkey on Thanksgiving.
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OK.
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Boom.
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Boom.
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That's a good hand.
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Pick up a marker, and we're going
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to draw on our anamorphic drawings
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a straight line across.
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And when you get to the outline of your hand, we go a hump.
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Now we're going to continue making those lines
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until the entire page is covered.
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Oooh.
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Look at yours.
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You can pick another color and just
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trace right underneath all your lines, exactly the same
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but in a different color.
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So everyone hold up your anamorphic drawing.
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And now we know that these are only two dimensional,
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but when you look at them from a certain perspective,
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our eyes will trick us into thinking
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that we're something 3D.
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All thanks to the sense of sight.
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Thanks, sight.
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Well, thank you for volunteering--
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Any time.
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--to potentially injure yourself.
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Yay.
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Where can people find you elsewhere on the internet?
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If you guys want to find me, I'm on YouTube.com/sourcefed
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and YouTube.com/sourcefednerd.
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And we have programming seven days a week there.
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Or you can hit me up on Twitter @thatgrltrish,
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no I in the girl.
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There you go.
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And the people who helped us get Trish here
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to be hit with hammers, Full Sail University.
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So if you enjoyed watching Trish get hit with hammers,
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maybe that's the school for you.
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Yes.
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Exactly.
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They've got a wide variety of anything related
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to tech bachelor programs you want.
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They offer courses online and at the actual school.
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And if you go to the school, they
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will provide all of the tech and stuff
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that you need at a deep institutional discount.
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Yup.
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And so if you want to help out the show,
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you can go to FullSail.edu/hardscience.
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Now I'm going to start caressing, just like that.
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Right there.
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That's the sweet spot.
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How's that feel for you?
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Pretty good.
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Thanks.
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Pretty weird.
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Hold on.
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No.
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Oh.
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Sorry.