keywords in LightRoom

Mark Roberts mark at
Wed Oct 7 08:56:12 EDT 2009

mike wilson wrote:

>---- Graydon <oak at> wrote: 
>> On Tue, Oct 06, 2009 at 06:39:18PM -0400, Doug Franklin scripsit:
>> > Graydon wrote:
>> >> Yeah, but I got taught data structures by a graph theorist, and we did
>> >> graphs, acyclic graphs, directed graphs, and then acyclic directed
>> >> graphs, so my brain thinks the acyclic is a special case of directed,
>> >> rather than the other way around.
>> >
>> > That taxonomy is not acyclic. :-)
>> Behold the weakness of adjectives! :)
>> > [Directed and acyclic are orthogonal characteristics when applied to  
>> > graphs.  A graph may be either, neither, or both.]
>> Sure.  And strictly, strictly, "directed" and "acyclic" both modify
>> "graph", rather than each other, so the phrases are completely
>> equivalent, only you'd have to be a grammar robot to read it that way,
>> which is why a native speaker doesn't think "directed acyclic graph" and
>> "acyclic directed graph" sound like necessarily the same thing.
>> Which is how I got into this particular excavation in the first place,
>> and I should stop digging. :)
>Such a pity.  Smileys cause automatic disqualifcation from Mark!dom.  You would have managed two with this post.

I think "Behold the weakness of adjectives!" deserves to make The List

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