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+Network Working Group                                  R. Callon, Editor
+Request for Comments: 1925                                          IOOF
+Category: Informational                                     1 April 1996
+
+
+                      The Twelve Networking Truths
+
+Status of this Memo
+
+   This memo provides information for the Internet community.  This memo
+   does not specify an Internet standard of any kind.  Distribution of
+   this memo is unlimited.
+
+Abstract
+
+   This memo documents the fundamental truths of networking for the
+   Internet community. This memo does not specify a standard, except in
+   the sense that all standards must implicitly follow the fundamental
+   truths.
+
+Acknowledgements
+
+   The truths described in this memo result from extensive study over an
+   extended period of time by many people, some of whom did not intend
+   to contribute to this work. The editor merely has collected these
+   truths, and would like to thank the networking community for
+   originally illuminating these truths.
+
+1. Introduction
+
+   This Request for Comments (RFC) provides information about the
+   fundamental truths underlying all networking. These truths apply to
+   networking in general, and are not limited to TCP/IP, the Internet,
+   or any other subset of the networking community.
+
+2. The Fundamental Truths
+
+   (1)  It Has To Work.
+
+   (2)  No matter how hard you push and no matter what the priority,
+        you can't increase the speed of light.
+
+        (2a) (corollary). No matter how hard you try, you can't make a
+             baby in much less than 9 months. Trying to speed this up
+             *might* make it slower, but it won't make it happen any
+             quicker.
+
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+Callon                       Informational                      [Page 1]
+
+RFC 1925            Fundamental Truths of Networking        1 April 1996
+
+
+   (3)  With sufficient thrust, pigs fly just fine. However, this is
+        not necessarily a good idea. It is hard to be sure where they
+        are going to land, and it could be dangerous sitting under them
+        as they fly overhead.
+
+   (4)  Some things in life can never be fully appreciated nor
+        understood unless experienced firsthand. Some things in
+        networking can never be fully understood by someone who neither
+        builds commercial networking equipment nor runs an operational
+        network.
+
+   (5)  It is always possible to aglutenate multiple separate problems
+        into a single complex interdependent solution. In most cases
+        this is a bad idea.
+
+   (6)  It is easier to move a problem around (for example, by moving
+        the problem to a different part of the overall network
+        architecture) than it is to solve it.
+
+        (6a) (corollary). It is always possible to add another level of
+             indirection.
+
+   (7)  It is always something
+
+        (7a) (corollary). Good, Fast, Cheap: Pick any two (you can't
+            have all three).
+
+   (8)  It is more complicated than you think.
+
+   (9)  For all resources, whatever it is, you need more.
+
+       (9a) (corollary) Every networking problem always takes longer to
+            solve than it seems like it should.
+
+   (10) One size never fits all.
+
+   (11) Every old idea will be proposed again with a different name and
+        a different presentation, regardless of whether it works.
+
+        (11a) (corollary). See rule 6a.
+
+   (12) In protocol design, perfection has been reached not when there
+        is nothing left to add, but when there is nothing left to take
+        away.
+
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+Callon                       Informational                      [Page 2]
+
+RFC 1925            Fundamental Truths of Networking        1 April 1996
+
+
+Security Considerations
+
+   This RFC raises no security issues. However, security protocols are
+   subject to the fundamental networking truths.
+
+References
+
+   The references have been deleted in order to protect the guilty and
+   avoid enriching the lawyers.
+
+Author's Address
+
+   Ross Callon
+   Internet Order of Old Farts
+   c/o Bay Networks
+   3 Federal Street
+   Billerica, MA  01821
+
+   Phone: 508-436-3936
+   EMail: rcallon@baynetworks.com
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+Callon                       Informational                      [Page 3]
+