Would You Rather - CS101 - UdacityYouTube↗  IA↗(long shot)
Education  12.8K views 66 likes 0 dislikes   19 Feb 2012
Udacity 651K subscribers United States YouTube↗


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[D. Evans] Ora che hai scritto il primo programma in Python,
[D. Evans] Now that you've written your first Python program,
Potresti chiederti perché abbiamo bisogno di inventare nuovi linguaggi come Python
you might be wondering why we need to invent new languages like Python
per programmare i computer e spendere tutti gli sforzi per imparare un nuovo linguaggio
to program computers and spend all the effort into learning a new language
piuttosto che usare una lingua come l'inglese o il mandarino che già conosciamo.
rather than using some language like English or Mandarin that we already know.
Ci sono molte ragioni per farlo.
There are lots of reasons for that.
I linguaggi naturali come l'inglese o il mandarino sono l'ideale per le persone che sono cresciute parlando tra loro
Natural languages like English or Mandarin are great for people who grew up speaking them
in conversazioni di tutti i giorni,
for day-to-day conversation,
ma ci sono diverse ragioni per cui non funzionerebbero bene per programmare i computer.
but there are many reasons that they wouldn't work well for programming computers.
Il primo motivo è per l'ambiguità.
The first one is ambiguity.
I linguaggi naturali sono intrinsecamente ambigui
Natural languages are inherently ambiguous.
Persone diverse possono interpretare la stessa frase ed associare significati differenti.
Different people can interpret the same sentence to mean many different things.
Quando noi programmiamo i computer, il computer deve interpretare quel programma,
When we program computers, the computer needs to interpret that program,
e vogliamo essere sicuri che il computer interpreti il programma
and we want to make sure that the computer interprets the program
allo stesso modo con cui il programmatore che ha scritto il programma
the exact same way that the programmer who wrote the program
vuole che sia interpretato.
intends for it to be interpreted.
Quindi, ecco un esempio dei tipi di ambiguità che ci sono
So here's an example of the kinds of ambiguities that come up
nei linguaggi naturali come l'inglese.
in natural languages like English.
Lo vedremo sotto forma di quiz.
We'll do this in the form of a quiz.
La domanda è, vorresti essere pagato $100 settimanalmente o bi-settimanalmente ?
The question is, Would you rather be paid $100 weekly or biweekly?
Queste sono le possibilità:
These are the choices:
Preferisci essere pagato $100 settimanalmente;
You could prefer to be paid $100 weekly;
Preferisci essere pagato $100 bi-settimanalmente;
you could prefer to be paid $100 biweekly;
dipende; o sei un altruista e non vuoi essere per nulla pagato.
it depends; or you're an altruist and you don't like to be paid at all.
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