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Date: Tue, 30 Oct 2012 22:16:25 -0400
From: Dave McGuire <mcguire AT neurotica DOT com>
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To: geda-user AT delorie DOT com
Subject: Re: [geda-user] The state of gEDA/gaf (Was gEDA/PCBs diversity, Was:
 Pin hole size)
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Reply-To: geda-user AT delorie DOT com

On 10/29/2012 05:19 PM, John Doty wrote:
>> I dunno.  The boards I make with it work just fine.  Why do I
>> never run into these limitations, when I use PCB very frequently,
>> while you, a person who just said they don't lay out their own
>> boards, see all of these horrible problems?
> 
> I can't grok all the magic properties of its peculiar set of
> abstractions. "Polygon" doesn't mean a geometric object and
> "elements" are not elementary. The idea that objects are composed of
> objects composed of objects, ... is missing. The idea that shape and
> physical properties are independent is missing.
> 
> Now, I thought it entirely likely that represented my own
> limitations. But then, I suggested it to people with layout
> experience, and they didn't like it either. Two years ago, I had an
> experienced mechanical engineer working for me, and I tasked him with
> learning pcb. He failed. But I haven't had this kind of trouble with
> gEDA.

  I don't get it.  I'm not disputing what you say above; these things
may very well be true.  But I lay out boards with it all the time, about
25 in the past year, and have never hit these issues.

  Why should I care if PCB has a structure that's called a "polygon"
that isn't really a polygon?  I use 'em when I need to place some copper
somewhere...no problem.

  I am honestly not trying to be argumentative here.  I just don't see
what the big deal is.

            -Dave

-- 
Dave McGuire, AK4HZ
New Kensington, PA