[plt-scheme] behaviour of void?

Matthias Felleisen wrote:

> I actually don't know what you want.

Well, I don't know either. Something that is visual but not a game: art, 
maybe. iTunes visualization. Something that is network-oriented but not 
just putting two things on different machines. Web-scraping, or doing 
something with some Google API.

> A chat server is all about text and 
> nothing about text, and in contrast to the Hamsup example that we used 
> to run, the universe teachpack is entirely, completely, totally functional.

I don't remember anything "dys"-functional about that teachpack, but 
it's been a while.

> If you really don't like your students to be chatty, why not write 
> scientific simulations?

Because they don't know enough physics, and because I want to stay away 
from the serious issues involved in inexact computation, because I can't 
treat them carefully enough.

> And, believe it or not, we're open to suggestions: ask and thou shall 
> receive. -- Matthias

I know that. You folks are terrifically receptive. Just the fact that 
we're having this conversation instead of my being ignored or flamed by 
True Believers. What you've achieved is fantastic. So forgive me for 
using that as a point of departure for thinking about issues which 
probably transcend this particular pedagogical tool and what can be done 
with it. --PR