What's in a Kernel?

Recently my cohorts Paul Parkinson and Doug Gaff
have been making a bit of noise about changes in the software industry
– evolution of software, and specialized software for military and
commercial avionics,and other applications that have strict time and
security requirements.  Aside from requiring strict adherence to
standards, critical systems software – especially medical or flight
related – have an increasing litany of certification inspections it
must pass.  In the secure-systems markets the same trend is evident.
Each of these markets are starting to require time- and space- critical

Let me define time and space critical.

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