Transcript c. 1:29-1:31, June 19 2001

Handshake problem, Jason, Nicola, Sofia


 
Time
Jason
Nicola
Sofia
1:29:25
So you figured this out by -
-Yes, 
doing this
you add that.
1:29:34
-But why did you do
-Because you didn’t right [?]
Twenty six by thirteen of all the numbers you could have picked?
Why?
What?
Why thirteen?
Why thirteen, 
-Thirteen’s half of twenty-six
-because half of [sigh]
-twenty- six is thirteen. [laughs]
1:29:48
I know that, but why did you multiply half by twenty-six? 
What?
But if you’re trying to find out how many handshakes they gave
-OK, twenty six 
-Why is it half of twenty six
-Because if you go twenty --
Each one of those equals twenty six and there’s thirteen of those – OK?
[quiet] Yes.I understand
1:30:15
There’s a point to this OK?
Yes, ok, what’s the point?
[laughs]
It gives an easy way to-


 
 
 
-the point, -- is that 

If you had
-twenty six
-if you had
Divide twenty six in half you get thirteen
1:30:26
Yes
Ok. There’s going to be thirteen pairs there in twenty six.OK?
OK. --Got ya. --
That’s -
[inaudible] Maybe you don’t understand what I’m saying.

I understand -- that thirteen times twenty six is the right answer, everythinglike that.

Yeah
1:30:48
But, how does that relate to handshaking? How does, like
Because when you have a circle and there’s twenty six people -
Yes
- in it, right
Yes
OK?
Each person
Each person doesn’t give a handshake-
-So each person’s going to shake half the people's hands?
-[inaudible;receive?]

No.
And the other half ’s going to shake their-
No.



[Observing Systems] [PME25]


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