Name: CS50 2017 - 読書0 - スクラッチ (CS50 2017 - Lecture 0 - Scratch)
Uploaded: 2021-01-14T07:21:04.000Z
Duration: 1 h 1 min 11 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

SPEAKER 1: All right, this is CS50, Harvard University's introduction

to the intellectual enterprises of computer science

And this was apparently me around the time

that I sat where are you guys now sitting thanks to a teaching

fellow who spent a little too much time trolling around Lemont Library, where

the 1995 freshman registers apparently still are.

And I point this out because this was a big deal for me

back when I was a freshman and ultimately

sophomore considering to take a class like this, CS50, but more generally,

And if you, like me, have this perception of computer science

from high school or even middle school, you

might have the perception that it's entirely based about programming.

It's perhaps the computer lab, heads down,

sort of coding away on something that you don't necessarily understand.

And yeah, I too had that perception freshman year in this course

and, dare say, the field more generally, really did

I certainly assumed that most everyone around me

This was true of most any field at Harvard in the course catalog

And so I instead gravitated toward the more comfortable.

I took a lot of gov classes and economics and history

just because that's kind of what I knew and liked in high school.

I wouldn't say I loved it, but I knew it and it was within my comfort zone.

And it wasn't until sophomore year that I got up

And I only did because the professor at the time let me take it pass-fail,

And that allowed me to get over this sort of mental hurdle

that I imposed upon myself, sort of fear of failure

or simply not doing as well as I might have been accustomed to.

And so I bewared a class like this until then.

And I always kind of regretted not exploring earlier on.

It doesn't have to be CS but can be really any field more generally.

But those really were my takeaways around the time I looked like this.

And I've taken comfort since in taking over this class

and have found it inspiring that these days, 68% of the students in this room

and in this room last year had never taken a CS course before.

So if you do have that mental model of everyone to your left

and your right surely must know more than you, odds are it is not,

In fact, within CS50, we have these different tracks, different types

of sections for students less comfortable, students more comfortable

And there's no formal definition to these labels.

And if you kind of have one foot mentally out the door today

because you're not really sure this is for you,

you're probably among those less comfortable.

But as such, you're in the majority, 56% of last year's students.

If by contrast, you have been programming

since you were eight years old, 10 years old,

whatever but you're largely self-taught and therefore

maybe have lots of gaps in your knowledge

or don't really understand all the formalities,

you just kind of figure things out, you might be among those more comfortable.

And if not, maybe you're somewhere in between.

And so in CS50 sections, do we have similar students together,

similar comfort level, similar backgrounds,

so that everyone can kind of feel comfortable speaking up not knowing

Because ultimately, the course is graded and assessed ultimately very much

manually, very much very delicately with respect

to students' prior background or lack thereof.

Indeed, what's most important at the end of the semester

is not so much where you end up relative to your classmates

but where you end up in week 11, our very last week, relative to yourself

And in fact, thanks to CS50's own Haley James and a whole bunch

of CS50 team members-- this summer, they spent

a while traveling around the country bringing folks back

to campus, alumni and former students and staff who had some connection

And if you'd like to see stories of some of your predecessors and folks who sort

have found their way-- accidentally, even--

to computer science finding challenge along the way,

check out this domain that the team put together-- project5050.org.

Now the course itself ultimately is not about programming per se.

And that's really what CS is, the field more generally.

Whether you're starting hardware or graphics or theory or any number

of fields, artificial intelligence these days, machine learning and beyond,

And what's really cool about CS I found early on

is that it doesn't necessarily-- it's not an end unto itself.

It's this field that empowers you to go do more interesting, more powerful

things in the humanities, social sciences, physical sciences, the arts,

anything because you have this new mental model for how you can solve

problems better, more efficiently, how you can solve them correctly,

and how you can sort of analyze large datasets

or solve problems that might have otherwise been beyond your grasp.