[plt-scheme] getting better speed with JIT

Matthew Flatt wrote:

> I must say, though, that code serious enough to benchmark belongs in a
> module. 

I agree. These weren't serious benchmarks I was talking about. They were 
little programs to be shown to first-year students in the context of 
learning about efficiency, and the underlying message is "Once you get 
past O-notation, there are a lot of factors affecting efficiency, and 
you don't know about most of them [*]." In that context, (require 
mzscheme) is actually a nice illustration, and I suppose wrapping code 
in a module (which they know a little about at this point) would be one 
as well. --PR

[*] Neither do I, clearly.