Talk about advantages, challenges, how many developers, why so few developers.

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diff --git a/hurd/advantages.mdwn b/hurd/advantages.mdwn
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-[[!meta copyright="Copyright © 2001, 2002, 2008, 2010 Free Software Foundation,
-Inc."]]
-
-[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
-id="license" text="Permission is granted to copy, distribute and/or modify this
-document under the terms of the GNU Free Documentation License, Version 1.2 or
-any later version published by the Free Software Foundation; with no Invariant
-Sections, no Front-Cover Texts, and no Back-Cover Texts.  A copy of the license
-is included in the section entitled
-[[GNU Free Documentation License|/fdl]]."]]"""]]
-
-The GNU Hurd has a number of enticing features:
-
-It's free software, so anybody can use, modify, and redistribute it under the
-terms of the [[GNU General Public License (GPL)|GPL]].
-
-It's compatible as it provides a familiar programming and user environment.
-For all intents and purposes, the Hurd provides the same facilities as a modern
-Unix-like kernel.  The Hurd uses the [[GNU C Library|glibc]], whose development
-closely tracks standards such as ANSI/ISO, BSD, POSIX, Single Unix, SVID, and
-X/Open.
-
-Unlike other popular kernel software, the Hurd has an object-oriented structure
-that allows it to evolve without compromising its design.  This structure will
-help the Hurd undergo major redesign and modifications without having to be
-entirely rewritten.
-
-The Hurd is built in a very modular fashion.  Other Unix-like kernels (Linux,
-for example) are also modular in that they allow loading (and unloading) some
-components as kernel modules, but the Hurd goes one step further in that most
-of the components that constitute the whole kernel are running as separate
-user-space processes and are thus using different address spaces that are
-isolated from each other.  This is a multi-server design based on a
-[[microkernel]].  It is not possible that a faulty memory dereference inside
-the [[TCP/IP stack|translator/pfinet]] can bring down the whole kernel, and
-thus the whole system, which is a real problem in a monolothic Unix kernel
-architecture.
-
-One advantage of the Hurd's separation of kernel-like functionality into
-separate components ([[servers|translator]]) is that these can be constructed
-using different programming lanugages -- a feature that is not easily possible
-in a monolithic kernel.  Essentially, only an interface from the programming
-environment to the [[RPC]] mechanism is required.
-
-<!-- This is a bit questionable...
-
-It's scalable.  The Hurd implementation is aggressively multithreaded so that
-it runs efficiently on both single processors and symmetric multiprocessors.
-The Hurd interfaces are designed to allow transparent network clusters
-(*collectives*), although this feature has not yet been implemented.
-
--->
-
-The Hurd is an attractive platform for learning how to become a kernel hacker
-or for implementing new ideas in kernel technology.  Every part of the system
-is designed to be easily modified and extended.
-
-It is possible to develop and test new Hurd kernel components without rebooting
-the machine.  Running your own kernel components doesn't interfere with other
-users, and so no special system privileges are required.  The mechanism for
-kernel extensions is secure by design: it is impossible to impose your changes
-upon other users unless they authorize them or you are the system
-administrator.
-
-The Hurd is real software that works right now.  It is not a research project
-or a proposal.  You don't have to wait at all before you can [[start
-using|running]] and [[developing|contributing]] it.
diff --git a/hurd/challenges.mdwn b/hurd/challenges.mdwn
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-[[!meta copyright="Copyright © 2010 Free Software Foundation, Inc."]]
-
-[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
-id="license" text="Permission is granted to copy, distribute and/or modify this
-document under the terms of the GNU Free Documentation License, Version 1.2 or
-any later version published by the Free Software Foundation; with no Invariant
-Sections, no Front-Cover Texts, and no Back-Cover Texts.  A copy of the license
-is included in the section entitled [[GNU Free Documentation
-License|/fdl]]."]]"""]]
-
-<!-- Should this page, and [[advantages]] be in the top-level directory?  -->
-
-The GNU Hurd has a lot of [[advantages]], but there are challenges, too.
-
-There is no successful true multi-server [[microkernel]] system for desktop use
-yet.  Though, they are quite popular in the simpler embedded space.