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Re: [xml-dev] The evolution of an XML professional

Indeed. I would sum that up as "A good professional knows the rules, and more importantly, knows when to follow them and when to ignore them."

Michael Kay
Saxonica


From: Rick Jelliffe <rjelliffe@allette.com.au> 
Sent: Monday, November 21, 2022 12:00 AM
To: Roger L Costello <costello@mitre.org>
Cc: xml-dev@lists.xml.org
Subject: [EXT] Re: [xml-dev] The evolution of an XML professional
 
I don't think so. XML is quite easy, if you avoid doing dumb things.
 
It is knowing what the dumb things are, the likely gotchas in several different situatations, that may make you a good professional, not any abstract or arcanegnosis. 
 
After all, XML is just (applied to runs of text) the same kind of abstraction that every other aspect of computing gets: DBMS, programming languages, protocols: allowing things to be known and named, and their concrete representation/functionality/sequence/dynamic-behaviour etc to be subsumed or keyed by that name.  (XML's only wrinkle is that those concrete concerns are frequently guessed at during the design stage, and not known.) 
 
For example, here is one dumb idea: "Standards are good, therefore where a standard exists you should adopt it."  But the professional knows Postel's law "be conservative in what you do, be liberal in what you accept from others" and will consider what profile of a standard is appropriate, and whether, once you have a fair idea of what the profile is, whether in fact there is any value in nominally adopting the kitchen-sink standard S (and whether just being S-friendly or S-ish might be better and more direct.)  The professional also knows there is more than one way to skin the cat.
 
Here is another dumb idea:  "If I adopt framework/architecture/COTS-solution X, everything will be easier".  But the professional knows that chances are there will be both pluses and minuses for any framework/architecture/COTS-solution: some things will be easier but other things may be harder: and when it turns out some things are harder, it is not the framework/architecture/COTS-solution that will get the blame, it is the stubborn part that does not fit. The professional knows that there may be swings and roundabouts, and no silver bullet, and that there is a tendency to throw the baby out with the bathwater.
 
Indeed, perhaps what makes a good XML professional is that they have a good-enough collection of generic software-engineering adages and saws that they can apply to any situation, and that they understand them enough to contest such sayings when raised inappropriately. Which means understanding at least Postel's Law, Brook's Silver Bullet, Brook's Mythical Man Month, Conway's Law, Meyer's Programming by Contract (and their evolutions, and all the other good stuff afterwards) enough that they unconsciously get raised as appropriate in practice.  (And they need to be able to see through fake rules, such as  the Law of Demeter.)
     
Cheers
Rick
 
On Sun, Nov 20, 2022 at 7:14 AM Roger L Costello <costello@mitre.org> wrote:

When you first start out in XML you imitate/mimic book authors and other developers.

Then you start to think about design and semantics to best utilize the data. 

Then a much smaller group of people think about XML in terms of systems.

Then a very finite few people crack this special code which is there's a philosophy and it's the philosophy that creates the system.

---------------------------
The above is my reformulation of "The Evolution of a Professional Investor" [See below].

How would you describe the evolution of an XML professional?

I think that in every field (investing, XML, whatever), the ultimate destination is the awareness/development of a philosophy of/for that field. Do you agree?

/Roger

The Evolution of a Professional Investor:

When you first start out in investing you imitate/mimic other investors.

Then you start to think about cash flows and how much profit you are going to make. 

Then a much smaller group of people think about investing in terms of macro geopolitics.

Then a very finite few people crack this special code which is there's a philosophy and it's the philosophy that creates the system.

-       Chamath Palihapitiya (https://youtu.be/kFQUDCgMjRc?t=7532)

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