Text with two indented, italicized paragraphs both starting with "In an emergency" in between three other paragraphs: Marc Stiegler has identified the root cause of the problem; our devices do not support aspects of sharing that we rely on in the physical world. These aspects can be illustrated with two stories. In an emergency, Marc asked me to park his car in my garage. I couldnโt do it, so I asked my neighbor to do it for me and told her to get the garage key from my son. I doubt that anyone would think twice about this story. The second story is in the computer domain. In an emergency, Marc asked me to copy a file from his computer to mine. I couldnโt do it, so I asked my neighbor to do it for me and told her to get access to my computer from my son. People often find this second story so preposterous that they laugh.
The Six Aspect of Sharing Figure 1 illustrates the six aspects of sharing that we rely on in the physical world. That text is around diagram with six images, text labels and arrows. Light blue arrows connect each of four in a right to left chain, and black arrows from the bottom left "Cross domain", extend to those. Another light blue arrow goes from an accountant, labeled "Accountable" to the right of the top four. The top four are, from right to left (in order of the arrows): - Recomposable. A hand giving keys to another waiting hand with a shadowy third hand perhaps giving the keys earlier. - Chained. The same image of two hands but without the third. - Attenuated. The same image of two hands. - Dynamic. A man in a suit and holding a briefcase running. The Cross domain image in the bottom left is an open gate in a possibly electrified fence like you might find around a farm field. Dynamic above a man in a suit running.
Relevant to agentic access control.
I was reminded of Alan Karp's & Marc Stiegler's litmus test for usable access control, and Marc's six aspects of sharing.
alanhkarp.com/publications...
