The Eternal Doorman

This was on Saturday: see  Coordinate invariant measures/entropy . It's such a shame that the well-established experts can't talk about these things , because they're much more interesting than the stuff you read in textbooks. See  Frederic Schuller on Metric and Topological Spaces .  Subscribe to  Assumptions of Physics Research . 

They can do position measurements with millimetre accuracy. So you will soon have surveillance cameras that can recreate 3D representations. You will also have very good sound systems for public spaces. Subscribe to Leve l2 Jeff .

See  Curious Marc - Apollo Comms . 1:25:00 Question about ISS frequencies: see  Curious Marc Fixing a US$33,000 HP 3GHz Signal Generator he Bought for US$150   Subscribe to Vintage Computer Federation .

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Happy birthday Laura!!!   Subscribe to  Laura Pausini  y Camila Cabello .

  3:08 He's right, but once you know all that you should also be able to work out that most of it is needed only because the other bits are there, and there is no way that all that cruft should be running "in production". See  Artful Bytes - When to Use a RTOS . Subscribe to Plan 9 Foundation .

Subscribe to  FUTO .  If you're American you can build a 200TB NAS for your photos and backups out of trash you probably have lying around the house: Maybe FUTO will sponsor a project that allows you to contract out to be offsite backup for your friends.  Subscribe to  Level1Techs .  Or you can start downloading the whole web for your personal use,... Subscribe to  TechHut . 

My comment: That was really good, thanks. Are there any systems that can take a high-level specification of a set of tasks and compile them into machine code that implements just the necessary functionality without the overhead of code which provides the OS primitives for use by any rogue code that may have been introduced to the system somehow? I am thinking of code that just sets up interrupt handlers, DMA channels, etc. so the system can really only do the one thing it was designed to do and nothing else.  Subscribe to  Artful Bytes . 

  See McCarthy's 1960  Recursive Functions of Symbolic Expressions and Their Computation by Machine, Part I . Subscribe to Yoshiki Ohshima (大島芳樹) .  Subscribe to  Javier Livas Cantu U7 .