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I always like to talk to you about what I read about you in the news and things you did.
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Besides Gatesletter, you also ran the news for ...
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You had something to do with this invention.
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The Omni ... - processor - Omniprocessor.
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We challenged engineers, to make something that can take sewage,
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and very inexpensively get rid of sewage.
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Cause sewage, it perhaps, it causes a lot of disease, mostly diarrheas.
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Because people don't have good sanitation system.
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So we said, it's way too expensive, the way that the rich countries do it.
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Make something that we can put throughout Africa,
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and get rid of all that sewage.
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And you change it into water that's drinkable water.
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Absolutely. - And you drank it?
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Yeah, so on one hand you've got sewage,
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then on the other hand you got - You got sewage.
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No, then you get some electricity, and you get water.
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And, it's pure water
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This is interesting because we actually have two glasses of water.
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That's right!
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This is the ultimate taste test.
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We think you'll be able to figure this out.
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Well, I already get to guess.
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I have to guess which one is the sewage water.
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But one is bottle water, one is sewage one.
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But we're gonna drink.
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And then we're gonna see.
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You're gonna reveal which one is which. - You bet!
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Yep. You do. Yeah.
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That's the taste test.
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See, now I am thinking, cause you're smart.
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No, you get to pick.
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Yeah I know, I get to pick. - No, I told them how to set this up.
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Yeah yeah yeah, okay.
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It's too easy.
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Yeah, it's reverse psychology. Yeah, you might be right.
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I never want to gamble against Bill Gates ever!
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You know what?
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I think you're too nice.
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So I am gonna let you switch it out.
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Alright. - And then I won't even look at the number on the thing.
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Alright. - Alright? - There you go.
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All right.
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Cheers! - On the count of three. Cheers! One, two, three.
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What do you think? Which one did you get?
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Make it sure that you drank it.
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Oh I know. This one I think it tastes pretty good.
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You just drink yours. Cheers!
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I'm pretty confident that that was...
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This is the bottle water.
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Well, it's rigged.
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It was all poop water.
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That was both poop water? - Absolutely.
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You're unbelievable Bill Gates! I can't believe you did that to me.
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Gosh! Really, that was it?
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Yeah, but that's as pure as any water that you've ever had.
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It tasted really good.
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Yeah, no... that was good poop.
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You gotta change its name,...
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It's the machine.
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The machine is pretty miraculous. - But how was that possible?
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How did I just do that? - Well, you boil it, you filter it.
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That's what engineers know how to do it.
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That'll be in Africa.
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I think it works.
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It tastes pretty good. I gotta give it up. I gotta give it up.
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Thank you, buddy.
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Our night to Bill Gates! Go to Gatesletter.com.