RE: xslt (multi) threading or parallelized execution

> I am really interested in the possibilities of lazy 
> evaluation. Lazy evaluation means delaying the computation of 
> things so that you might not need to do it at all.

I think you'll find that the more efficient XSLT 1.0 and 2.0 engines already
make very heavy use of lazy evaluation. Stick a few xsl:message calls inside
an xsl:variable to watch it in action.

Michael Kay
http://www.saxonica.com/