|I canít begin to
tell you how impressed I was, when I was first learning Smalltalk, to
discover that programs were themselves built out of objects, and that you
could change and extend these too, just like an other. Itís a big part of why
Iím still here, and standing before you today.
|(Give a brief
rundown of what these do at runtime)Ö
|There is really very
little that you canít get at in Smalltalk. We identified the things you canít
override back in í89: sending a message, receiving a message, returning from
a context, and reading and writing instance variables.