Ian Bicking: the old part of his blog

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'Latent Typing' is also the subject of Bruce's keynote at PyCon in a few weeks --

http://dc2004reg.pycon.org/dc2004/talks/keynote
in this talk I will look at various issues and arguments surrounding the concept of type, and in particular examine the phenomenon of 'latent typing' (often called 'weak typing'), why the concept is powerful, and how it is expressed in different languages. In the process, I will attempt to clear up many of the issues that have arisen during attempts to describe Python's place in the spectrum of language features

...wish I was going to be there. Hope that he puts the text up on his website.
Comment on Latent interfaces
by Bg Porter