From: "Karp, Alan" <>
Date: Mon, 9 Dec 2002 16:08:12 -0800
Subject: RE: [e-lang] "Capability Myths Demolished" (was: Software secur ity workshop)

I got confused about some stuff in Lampson and asked Tyler to help me out.  I sent a private note, because I could see the list going down a giant rat hole otherwise.    In his response, Tyler wrote a single sentence that to me captured the essence of capabilities.  When I mentioned it to MarkM, he suggested I send it to the list. 

Tyler Close wrote:
> This means the lookup in the C-list has to
> happen *before* the message is sent.

I know that, and you know that, but I haven't seen the point made that explicit before.  Perhaps we should make this criterion the acid test.     

Alan Karp
Principal Scientist
Decision Technology Department
Hewlett-Packard Laboratories MS 1141
1501 Page Mill Road
Palo Alto, CA 94304
(650) 857-3967, fax (650) 857-6278
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