 Welcome back to Computer Science E1. This is lecture six, and this is our little surprise. So unbeknownst to those of you who are tuning in from afar, we just sat for our first hourly exam, and this subsequent hour is meant to be your opportunity to wind down a bit, hopefully poke fun at us a bit, and generally just puts yourselves to the test in a more public form, or at least some of you. With that somewhat vague introduction out of the way, I need a Vano White of sorts. Someone who looks pretty twirling around down here, someone who looks masculine twirling around down here, either will do. We just generally need someone to help us with some chalkboard work. You have to be comfortable peering on film needless to say, and we need you to have signed your life away on that waiver during the first lecture. But it's a non-speaking role. It is a non-answering role. It is perhaps the easiest of all the roles about to be auditioned off. Come on down. What is your name? Christine Potter. Christine Potter, come on down. You aren't enough cheesy jokes for tonight. All right, so Christine is going to be our Vano White of sorts. So if you could just stand beside me here for a moment, grab your favorite colored chalk. I now need three volunteers. So our first team, as we'll dub them tonight, will be your three feared teaching fellows. And as we have four remaining seats, needless to say, we're about to pit four of you against this trio here. In a contest of wits, a contest of wits to which you have written the answers and the questions. So if we've ever set you up for success, hopefully this is now the night. But that means we have four seats to fill. Do I have a pair of friends who would like to come down here and match wits with these three? A pair of people sitting next to each other. I'll take anyone. All right, come on down. And one more. And what is your name again? Dawn. Dawn. Dawn, who would like to join Dawn down here? You, of course, as the first volunteer, get your choice of seats. Who would like second choice of seats? Come on down. And this is, I forget the name already. Sorry? Eric. Eric, come on down. So Eric and Dawn, your task for the moment is to think of a team name. As the teaching fellows think of the same, we now need two more volunteers. Come on, we're rolling film. This is not fun for those tuning in from home. Two more volunteers. Yes, come on down. What is your name? Mimi. Mimi, and who will be Mimi's partner here? Just think, if you're not sure of an answer, you can just put it on Mimi now, all right? Who is going to work alongside Mimi? Come on, I'm going to turn around back to the camera. And by the time I turn around, I need just one more volunteer to be coming down the aisle. Don't make me look like an idiot standing with his back to the camera. I'm turning around, and we have, oh, this is bad. What's the camera going to do then? Would you, oh, you know what? I think what's fair here, Mimi. Choose your partner if you would. Would you be comfortable joining Mimi on the table? All right, what's your name again? Jerry, come on down. Jerry and Mimi, you two will need a team name. So as these two meet each other, let's go down here to the teaching fellows. What will be your team name for whatever it is this game we're playing? We are the Durs. The Durs. Then can you write Durs. The Durs, OK, and what I need for Christine, if you wouldn't mind writing three columns for each of the team names, perhaps in order. So either board, but let's put them on the right, so the Durs. Yep, just a column for points that you will be tallying for them. All right, and meanwhile, we have Don and Eric. Eric, yes, Don and Eric. We were very uncreative and came up with nerds. All right, not so bad. So the pressure now is on Jerry and Mimi for the third team name. We'll be the Doctor's Pepper. The Doctor's Pepper. OK, very creative crowd here tonight. All right, so with that said, for those of you who are tuning in via distance education, we ask the entire studio audience here tonight to come up with questions in the following 10 or so categories. They also hopefully provided us with the answers, the means via which the audience will now be involved. You don't get off scot-free. You will ultimately be the judges in this contest of wits. I am just going to be the pretty face that reads off the questions and the answers. You decide if the answers that's stated, and frankly, sometimes the answer that's written, is actually the correct answer and acceptable. And meanwhile, Christine, if you wouldn't mind keeping track of everyone's points, just a total tally for the current totals would be great. With that said, any guesses as to what game we're about to embark on here? No? Oh, yeah, somebody's been looking over my shoulder. Yes, in fact, we have demonstration and multimedia. This is followed, of course, by the sound that is going to be. And that's where normally I insert my name. So here, I'm the one you've got. Here are the five categories. We'll do a quick refresher for those of you unfamiliar with the game of this sort. But the first category tonight will be bitter, referring, of course, to questions related to bits and bytes. The second category will be this, that, or the other things, referring, of course, to secondary storage, the cheesiness never ends in this course. We don't try very hard to be funny in this class. Followed by spam, category all about email questions. Fourth category tonight will be the worldwide weight, referring, of course, to the web. And finally, exam one will be our fifth category. Prior to tonight's random selection of contestants, we flipped a coin and the nerds happened to win it. That actually did not happen. But the nerds mean, this means that they will lead off with our choice of categories. What we will simply do is ask the nerds to choose a category. I will then read you a question in that category. Anyone may then, by a show of hands, tell us what their group's answer is. If you're correct, you will win whatever dollar value has been chosen on the board. And if you're incorrect, of course, you will lose that dollar value. We call this jeopardy, but it's sort of backwards since we just go the easy way and ask questions and expect answers, not the reverse, since that would require a lot of editing, I think sometimes. So Christine, meanwhile, is gonna run the board for us and ultimately Christine, if you could be the arbiter of whose hand goes up first. We're very low tech here. We don't even have so much as a light bulb in front of people here. So, with that said, the nerds, what category would you like your first question from? Worldwide weight. All right, so the world wide weight. So Ed, for how much? I didn't know we'd get to pick values. You do, in fact, $200 through $1,000 is the choices that you can awkwardly see up here. Oh, is there actually anything tied with these values that will have weight for us at the end? More nerds. We'll go with $1,000. $2,000. And in true form, I'm gonna pull off the top sheet here with which to ask a worldwide web related question and no name on it, of course, but notice that it is apparently the only blank space on the paper. So we'll move on to the next category. Here is your question, anyone's question. First hand to go up gets to answer first. What is the default file name for a homepage on most websites? We got some bias here. The wrong name is PTSD, that's my number is Dan. Index.html. Index.html, audience, do you agree, disagree? Yeah, well, then. So at this point, the dares go up $1,000, they have to troll the board, which Dan means your team can choose the category and dollar amount. David, I'd like to go with spam for 1,000, please. Spam for 1,000, Dan, yes. Spam for 1,000, and of course our email category. What are some TLDs and what's that stand for? Eric. Top level domain.ae for Arab Emirates. Some TLDs. Some TLD.uk for United Kingdom. Is it too some? How about .com.edu? .com, audience, is that good? All right, you get your 1,000, excellent. So the nerds are now in control, that was a really pathetic clapping. How about? The nerds, you're in control of the board. What category and dollar amount would you like? Let's go to 600 to change it up. 600 in the, oh, sorry, exam one. 600 in the exam one category. When will our tests be graded? Tomorrow. Audience? All right, $600, that is in fact correct. Question, all right. The nerds, you're in control, you're up to 1,600. What would you like? We're all bitter. For 1,000? Bitter for 1,000, of course, about bits and bytes for anyone's hand to go up first. Sort of an open-ended question. Is there a way to categorize the various numbers of bits and bits that is easier to remember the values? Okay, no dumb questions in this class. There are confusing questions, so we're gonna choose a different one. How many bits are in a byte? Mimi? Eight bits in a byte? Excellent, so you're on the board for 1,000. All right, Mimi, you two are in control, what would you like? It really doesn't matter, since you see the, means by which we chose them. Spam for how much? For four, nor do your relative choice of dollar values affect the difficulty of the question. Where are we spammed, did we say? All right, what's a sub-domain of Harvard.edu? Nerds? FAS? Audience? All right, they like it, so another $400. It's a pretty good score here. Nerds, you are still in control, what would you like? This, that, or the other thing? This better or the other thing for how much? 1,000. 1,000 dollars, of course, a question about secondary storage, oh, open-ended question. What is secondary storage? Eric. Several different types of storage that could be added on to your already existing computer to back up files, for example. Oh, given an example too, so I have a blank answer, so audience, yeah, all right, you get it again. So 1,000, quite in the lead, Eric, what would you like? Don, you too, you got to choose here. Take exam for 1,000. Exam 1 for 1,000 dollars. How was exam 1? It was fairly difficult compared to the review questions, but not too awful bad. Is this a modicon? All right, good, for 1,000, what would you like next? How about spam for 800? Don, you picked the best partner, I think. Spam for 800, all right. What we got in the email category is, Canon. Okay, let's see. What's my email address? C-S-C-I-E-1 at fast.harper.edu, yeah. No, no, no, I'm sorry, it's K-M-J-O-H-N-S at f-a-s.harper.com, but you're still in control. See it, comment. Would like to do worldwide wait for 800. Worldwide wait for $800, about the worldwide, well, I didn't even try. Can you surf the web? Yes. Audience, there's no answer. Next on the board, what do you, oh, that was for 800, 800. What would you like? This, that, and the other thing for 800. For 800 dollars, and your question about secondary storage, it is a good question, is a floppy disk a type of secondary storage? I think so. Would you like to consult with Mimi on the next roll? What would you like? Time for a few more questions in single jeopardy. How about it? Oh, we're looking here, huh? How about a bidder for 800? Bidder for 800 dollars. Your question, your question is, oh, we got it again, get it quick. How many bits are there in a bite? Eric, eight. Well done again. 800 dollars, all right. So let's just take a recap here. We got the doctor's pepper at 1800, the nerds at 5,000, the nerds at 800. You guys are still in control. Eric, what would you like? What, spam for 600, please. Spam for 600 dollars. Your question about an email is, your question about email is, my question about emails is, so, oh, good question. We'll be back after this. All right, so your question about email is, again, what does TLD stand for? Just raise your hand before Eric. Yes, of course. We have time for one more question in single jeopardy. Eric, how much would you like? Bitters for 600. Bitter for 600, last question. What, eight? The answer's to bidder so far, but eight. Oh, I see, I see. 600 dollars, question about bits. Our last question in single jeopardy, it's a common theme here. What is the largest decimal number that can be represented by one bite? It's 155. Audience? So here we are, the Ders are finally back in quadruple digits at 1,400, nerds at 5,600, the doctors pepper at 1,800. So let's, I've done too much talking, why don't we take a moment, these guys are all mic'd and take a moment to get to know the teams here. So, Ders, pepper, doctor, pepper. Sorry, tell us about yourselves. Well, my name's Jerry. I'm actually not a fast kind of thinker. I usually like to think about my answers before I give them, so I'm actually a lot smarter than I am. But. Excellent, well, we're glad to have you here. Maybe? I mean, yeah, I chose Jerry because I knew he was a deep sinker, so. Make you look good, all right. Just kidding, so Dawn, welcome to the show. Tell us about yourself. Well, I'm just relieved that the, but obviously I'm sober, and this was a nice way of adding some levity to get rid of some of that stress. Oh, excellent, yes, there's no better stress reliever than sitting in front of 50 people on camera. Well, I tried not to think about that. I was having a good time. Well, good, and Eric, how about yourself? My name is Eric, and I really like Ray's suspenders. Fantastic. Let's jump right to Ray then, in fact. Ray, what's it been like working with this crowd this semester? I've submitted the evaluations yet, so it's been fantastic. Excellent, and Dan, how does it feel to be the only one who's lost points for your team? You know, I just want to take this opportunity to say that David's been lying to you about the rules. It's actually the group with the lowest number of points that wins the prize at the end. So sorry, folks, we've sweetened you, but yes. And Eugenia, what's it been like working with this crowd this semester? I enjoy reading the problem sets, and so I'm gonna look forward to reading the exams tomorrow. Oh, fantastic, very neutral answer, though, notice. Anyhow, that brings us to double jeopardy, which simply means that all of the dollar values have been doubled. Our categories have changed from categories A to B, so I'm putting aside the several instances of how many bits are in a byte, and what is my email address, turning instead to the following five categories. Oh, you know what, Christine. Christine, tell us. Oh, it's a non-speaking one. There's no Christine. All right, first category is guys in red shirts. One person got this, what's the connection here? Storytime. No, but funnier, is it comp USA, all wear red shirts? This, of course, then is the buying a computer category. If that weren't sufficiently clear. So category two is sharks with lasers. What's this getting at? No, but good answer. This is getting at optical storage. All right, how about surfs up? Easy one. The World Wide Web. Wizards of us, oh, clever, witty. Operating systems, of course. And finally, staff only, questions related to the staff. That brings us to double jeopardy. We flipped another coin, and the doctor's pepper won this toss, so we're gonna give them control of the board arbitrarily. What would you like? Let's do staff only. Staff only for? Ooh, for 2,000. This will, this will, this will put you even farther away from winning, according to that. Wait, what category would you just choose? Staff. Staff only, oh, that's too easy. Okay, it's about me. Oh, good question. Is the staff helpful? Doctor's pepper? Yeah, when they want to be. Baby, would you agree or disagree? Quite helpful. All right, that is in fact the answer. Yes is the answer. Well done. Surfs up for $1,600. Question about the World Wide Web is going to be, what is the protocol for communicating with web servers? Can we finish the question, please? No, Eric doesn't need it. Yeah, I would like to hear it. What is the protocol for communicating with web servers and browsers, Eric and Don? HTTPS? That's good. Of the bars. What about the Wizard of OS? The Wizard of OS 4? For $1,200, your question about operating system is, your question about operating systems is, which, what's one disadvantage to jumping on the Microsoft Windows Vista bandwagon this holiday season? I saw you, genius hand goer first. If you have an older computer, it might not be able to support the roughly answer. Okay, but it is, it is. Good, for $1,200 and the TFs are in control. I didn't think it was going to be out by this Christmas. You know, it is in, it's... January 2007 for the average home user. If you're a business person, you might get it towards the end of the year. There you have it. Straight for me, one first. Steph, you are in control. What category would you like? Let's go for the guys in red shirts for $2,000. For $2,000. Dan, if you answer this question incorrectly, you will be solidly in first place. For $2,000, what would category? I have a five second shirt. Guys in red shirts, buying a computer. Should the average home user spend extra money for a dual core processor? Virginia, again. No, unless you're going to be running lots and lots of high end applications at once. Audience? Nicely done, for $2,000. Dan, I'm sorry, you're now in second place. You're in control. Time for a few more questions in double jeopardy. We're going to go with sharks with lasers for $2,000. Sharks with lasers for $2,000, of course, about optical storage. Interesting question. Could you, existential question. Could you consider a book made of paper to be a form of optical storage? Is this your question? Yes. I'd say maybe you could, but that would be pushing it a little bit. Yes, that is, in fact, yes. You're in control of the board. Time for a couple more questions. Staff only for? Okay, $1,600. For $1,600, staff only. Who is the instructor for? We'd like to hear the question, please. Who is the instructor for computer science E-50A? Oh, $100 for Jerry's. Who are you going to say? Hardly like, all right, professor. No, E-1 is the question. Oh, it's David. All right, good, well, that's... More question in double jeopardy. It looks like we have, everyone is still in a position to win, based on how they wager, very close for the nerds and doctors pepper. Jerry, your team's in control. What would you like your last question this round to be? Are we still on line? Yeah, which one? Which question would you like? That's really bad. Okay, guys in red shirts for $1,600. Guys in red shirts for $1,600. This will put you even more solidly in the lead. Your question is, why did I buy a gateway computer? This is not your question. All right. Well, this person might have wanted to buy a computer that was affordable and yet was usable for home applications, so they're not always in high school. Oh. Actually. Okay, I mean, they're not bad. This is all what I've heard of. You're in a total chaos. Are they in a total chaos? Over the chaos. So officially this answers it, oh wait, we have sounds for this scenario. Do we? No, I guess we don't. We have this. I was the first. No, we don't have this, apparently. All right, no is the answer, which is minus $1,600, but the other two teams can still bring in, Eugenia? It's one of the vendors that will let you customize your options for computers. And way back when, they used to have a trade-in upgrade option. So once you bought a computer. Is this your question? No. After a certain period of time, you can trade it in for a new one. I'm not sure if they still do that, but that used to be a really good reason for getting a gateway. All right, so audience, the answer officially is quote, unquote, good service. Now to our final round in final jeopardy, these guys will only be told a category in just a moment. After they're told this category, they will be allowed to wager up to the dollar amount they currently have. If they subsequently find that they have answered the question that I'll then ask correctly, they will walk away with that much more money. If of course they answer it incorrectly, they will lose that much money. And we have the nice distribution of points here, whereby you can kind of blow it even if you're in the lead here, depending on your choice. So let me give you guys each a piece of paper on which in a moment to write down the total positive dollar amount that you would like to wager from zero to your current total, the category for final jeopardy tonight will be to be or not to be. Based only on that description, how much of your funds would... Don't give your instructor that look. Based on this description alone, how much of your money would you like to wager? Take a moment and jot that down. Are any questions coming from students on this one? Not from Jerry. Their question will be coming from me this time. The one question, all right, myself. We just borrowed one. Oh wait, I got that covered, whoever's listening. I was right here, shoot him. Take a moment, choose your dollar value. Jot it down and anything you got there, good. Bit of awkward silence here, since this is where they usually go to commercial break. As these folks discuss, notice we didn't hit on our audio daily double, which was queued up. I'll give it to the audience and say a time filler here. The question was going to be, name this tune. For a box of nerds, name that tune. Anyone from the audience? Oh, I heard, well, I got two packs of nerds. So they start up sound from Windows. 98, excellent, well done for you as well. All right, we are back to the crowd here. You hopefully have a dollar amount that other people didn't see since that defeats the strategic aspect of this. I can see it. Your question now that you've written this in stone is the following. How do you represent in binary? The number 65,536. Oh, is this timed? Doesn't matter. We don't need to because we made something like that. 65,536. Oh, thanks. 5,536. I'll hit repeat since these two teams have just written the question down. We need one more. Nope, yes, no. All right, I'll start with these guys look like they are set. The TFs look like they are set. Technically, we need to start with the person in the third place, I think. Revealing their answers, is that right? So Drs. Peppers, as you write your answer, they have, okay. So what this team has written is this, which is a one followed by, what, 15 zeros? Okay, well one followed by what, 15 zeros? Okay, so they have wagered 5,800. All of it. Now let's keep things into, Dawn is changing her answer. I did a question mark. Oh, okay. So the third answer is two... No, that's what we wagered. Oh, that's what you wagered. The answer is $2.37 cents. The answer... No, we didn't put the brain power into it. But did you put anything into it? Question mark. Oh, that's the answer. Oh, I see, that's the answer. And they wagered only 237, which means they really haven't taken a hit. So if the durrs have wagered at least $1,001, and if these guys are correct, pretty much all of their money, well the TFs will walk home the winner of the pumpkin is the prize tonight. Their answer was a one followed by... What, what? 16 zeros? One followed by 16 zeros. So we seem to have an interesting outcome here. On the left, your left, we have the doctor's pepper who wagered 5,800 and have a one followed by 15 zeros. On the right, we have a group that wagered $6,200 smiley face and answered a one followed by 16 zeros. Audience, who is the winner? But do you really know that or are you just... The answer I'm afraid is that 65,536 is the largest possible, is the total number of values you can represent with 16 bits. Recall though that in binary, we start counting at the number zero, which means that with 16 bits, we can only represent zero through 65,535, which means you do in fact need that 17th bit. So our winners this year are the durrs. Congratulations to them all. Make a round of applause for our volunteers tonight. And we will see you next week for our lecture on multimedia. Enjoy the rest of your week. You're doing well there for a while. I thought we were going to spoil you. Have a nice event.