Imperfect

Imperfect

By The Engineered NetworkSociety & CulturePhilosophy
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Imperfect episodes

  • 39: Therac-25
    The successor to the Therac-6 and Therac-20 RadioTherapy machines would integrate the powerful DEC PDP-11 mini-computer to control all of the Therac-25s functions, including the safety interlocks, for the first time. In two years the 11 machines in service would overdose six people across two countries, killing three of them before they figured out why.
    With John Chidgey.

    This show is Podcasting 2.0 Enhanced

    Reports into the Incidents:

    • An Investigation of the Therac-25 Accidents
    • ‎Medical Devices: The Therac-25
    • The Therac-25: 30 Years Later
    • A Usage-Model Based Approach to Test Therac-25
    • Good Computing: A Virtue Approach To Computer Ethics: Chapter 6

      • Links of Potential Interest:

      • Therac-25
      • The PDP-11 Assembly Language
      • PDP-11
      • Digital Equipment Corporation
      • Programmed Data Processor
      • Rad (unit)
      • Order of Magnitude
      • Myelitis
      • Collimator
      • Fatal Dose: Radiation Deaths linked to AECL Computer Errors
      • Reactor Accidents: The Human Fallout
      • An Overview on Radiotherapy: From Its History to Its Current Applications in Dermatology
      • In MedTech History: Mammography
      • The programmer behind the THERAC-25 Fiasco was never found
      • AMA: My professor investigated the Therac-25 incident
      • How history, principles and standards led to the safety PLC

        • Support Imperfect on Patreon

        Episode Gold Producers:
        'r' and Chip Salzenberg.
        Episode Silver Producers:
        Mitch Biegler, John Whitlow, Kevin Koch, Oliver Steele, Lesley Law Chan, Hafthor and Shane O'Neill.
        54 min
      • 102: Podcast Lightning
        A team of podcasters and developers are working on the next evolution of podcasting they call Podcasting 2.0. Dave Jones joins John to talk about their goals, RSS, XML and JSON pieces and how they fit together. To top it all off, we also dive into BitCoin, Lightning and distributed monetisation in podcasting.
        With Dave Jones and John Chidgey.

        Related Articles:

        • Podcasting 2.0
        • Podcasting 2.0 Addendum

          • Links of Potential Interest:

          • Podcastindex.org
          • Developer Documentation for the podcastindex.org API
          • Podcast Index GitHub
          • Podcast Namespace GitHub: A wholistic RSS Namespace for Podcasting
          • RaspiBlitz
          • Voltage Lightning Nodes

            • Support Imperfect on Patreon
            Episode sponsors:
            Premium Jane:

            Premium Jane are a US-based provider of organic CBD products that meet the highest standards of quality and purity.

            Visit premiumjane.com and use the Coupon Code PJ20OFF for 20% off. Hurry it's only for a limited time!Many Tricks:

            If you’re looking for some Mac software that can do Many Tricks remember to specifically visit the URL below for more information about their amazingly useful apps. Don’t forget the return of Usher with the Usher 2 Pre-Sale!

            Visit manytricks.com/pragmatic and use the Coupon Code (listen to the episode to get the code) for 25% off the total price of your order. Hurry it's only for a limited time!

            Episode Gold Producer:
            'r'.
            Episode Silver Producers:
            Mitch Biegler, John Whitlow, Kevin Koch, Oliver Steele, Lesley Law Chan, Hafthor and Shane O'Neill.
            1 hr 49 min
          • 10: SemiDisk Emulator
            The SemiDisk Emulator was one of the first true RAM Drives for PCs. An article from a self-proclaimed speed-freak from the April 1983 edition edition of the Creative Computing Magazine.
            With John Chidgey.

            Course Material:

            • Creative Computing Magazine (April 1983) Volume 09 Number 04

              • Other shows on the network:

              • Causality
              • Pragmatic
              • Analytical
              • Imperfect

                • Support Imperfect on Patreon

                Episode Gold Producer:
                'r'.
                Episode Silver Producers:
                Mitch Biegler, John Whitlow, Kevin Koch, Oliver Steele, Lesley Law Chan, Hafthor and Shane O'Neill.
                12 min
              • 38: Thunder River Rapids
                A popular family-friendly ride at DreamWorld would claim the lives of four people in 2016. In nearly thirty years of operation the ride had several similar but non-fatal incidents with blame placed on the operator every time, when a three thousand dollar modification could have prevented a horrific incident.
                With John Chidgey.

                Investigation Report:

                • DreamWorld (PDF)

                  • Links of Potential Interest:

                  • River Rapids Ride
                  • Thunder River Rapids Ride
                  • Dreamworld operator Ardent Leisure Fined $3.6M for Thunder River Rapids Ride Deaths
                  • Class Action Over Dreamworld Deaths
                  • Shutdown Impacts Dreamworld’s Plans For New Rollercoaster
                  • Dreamworld Chief Resigns After Damning Evidence At Inquest
                  • Dreamworld Pays $1.8M In Termination Payouts
                  • Dreamworld’s Missing Accountability
                  • Dreamworld Accident Spurs Queensland Safety Crackdown

                    • Support Imperfect on Patreon

                    Episode Gold Producer:
                    'r'.
                    Episode Silver Producers:
                    Mitch Biegler, John Whitlow, Kevin Koch, Oliver Steele, Lesley Law Chan, Hafthor and Shane O'Neill.
                    37 min
                  • 101: AstroPhotography
                    Ian Norman from Lonely Speck joins John to talk about photographing the MilkyWay with just your DSLR and without spending a fortune. We cover everything from Star-Trackers, Red-light filter removal, Pollution Filters, Focussing techniques, Image stacking and lots more.
                    With Ian Norman and John Chidgey.

                    Links of Potential Interest:

                    • How to Photograph the Milky Way - LonelySpeck
                    • Bahtinov Mask
                    • SharpStar2 Precision Focusing Tool – Lonely Speck
                    • Hyperfocal Distance
                    • The Center Column – Independent Tripod Testing
                    • Airglow

                      • Helpful Apps:

                      • PhotoPills
                      • Fifth Star Labs
                      • Dark Site Finder
                      • Sky Guide (iOS)
                      • Stellarium (Android)

                        • Light Pollution and Filters:

                        • Bortle Scale
                        • John E. Bortle
                        • Light Pollution and Astronomy
                        • Sodium-vapor Lamp

                          • John’s Camera Gear:

                          • Nikon D500
                          • Tokina 11-16mm DX Ulta-Wide
                          • NIKKOR 200-500mm f/5.6E

                            • Ian’s Camera Gear:

                            • Sigma 105mm f/1.4

                              • Star Tracking:

                              • Star Adventurer Pro Pack
                              • SkyGuider Pro Camera Mount
                              • ASIAIR PRO

                                • DSLR Conversion Services USA:

                                • Life Pixel IR
                                • Kolari Vision
                                • Spencers Camera

                                  • Image Stacking Software: (Wide-Angle)

                                  • ‎Starry Landscape Stacker
                                  • Sequator

                                    • Big Image Panorama Stitching:

                                    • PT GUI
                                    • Microsoft ICE
                                    • AutoPanoGiga (No Longer Available)

                                      • Support Imperfect on Patreon
                                      Episode sponsor:
                                      Many Tricks:

                                      If you’re looking for some Mac software that can do Many Tricks remember to specifically visit the URL below for more information about their amazingly useful apps. Don’t forget the return of Usher with the Usher 2 Pre-Sale!

                                      Visit manytricks.com/pragmatic and use the Coupon Code (listen to the episode to get the code) for 25% off the total price of your order. Hurry it's only for a limited time!

                                      Episode Gold Producer:
                                      'r'.
                                      Episode Silver Producers:
                                      Mitch Biegler, John Whitlow, Kevin Koch, Oliver Steele, Lesley Law Chan, Hafthor and Shane O'Neill.
                                      1 hr 49 min
                                    • 9: The SyQuest 306
                                      The SyQuest 306 removable disk drive article from the April 1983 edition of the Creative Computing Magazine.
                                      With John Chidgey.

                                      Course Material:

                                      • Creative Computing Magazine (April 1983) Volume 09 Number 04

                                        • Other shows on the network:

                                        • Causality
                                        • Pragmatic
                                        • Analytical
                                        • Imperfect

                                          • Support Imperfect on Patreon

                                          Episode Gold Producer:
                                          'r'.
                                          Episode Silver Producers:
                                          Mitch Biegler, John Whitlow, Kevin Koch, Oliver Steele, Lesley Law Chan, Hafthor and Shane O'Neill.
                                          9 min
                                        • 1: Nice Biscuits
                                          To me the Nice Biscuit isn't nice. Let me tell you why...
                                          With John Chidgey.

                                          Links of potential interest:

                                          • Nice Biscuits

                                            • Other shows on the network:

                                            • Causality
                                            • Pragmatic
                                            • Analytical
                                            • Sleep

                                              • Support Imperfect on Patreon

                                              Episode Gold Producer:
                                              'r'.
                                              Episode Silver Producers:
                                              Mitch Biegler, John Whitlow, Kevin Koch, Oliver Steele, Lesley Law Chan, Hafthor and Shane O'Neill.
                                              6 min
                                            • 0: Coming Soon
                                              Most people can look past the imperfections of everyday things in the world. For those that are unable to, this is for you.
                                              With John Chidgey.

                                              Coming soon…


                                              Support Imperfect on Patreon
                                              1 min
                                            • 8: A Christmas Carol S1 Part 1
                                              Stave 1, Marley's Ghost, Part One of the great novel A Christmas Carol by Charles Dickens. Recorded and released for Christmas 2020.
                                              With John Chidgey.

                                              Source Material:

                                              “A Christmas Carol” by Charles Dickens

                                              Other shows on the network:

                                              • Causality
                                              • Pragmatic
                                              • Analytical
                                              • Imperfect

                                                • Support Imperfect on Patreon

                                                Episode Gold Producer:
                                                'r'.
                                                Episode Silver Producers:
                                                Mitch Biegler, John Whitlow, Kevin Koch, Oliver Steele, Lesley Law Chan, Hafthor and Shane O'Neill.
                                                12 min
                                              • 100: Oh My NAS
                                                Casey returns to join John in an episode where we explore all things NAS - specifically the Synology. How we use it, what we use it for and how we neither of us can ever live without one anymore!
                                                With Casey Liss and John Chidgey.

                                                Related Article:

                                                • Oh My NAS

                                                  • Links of Potential Interest:

                                                  • Plex
                                                  • Starport 75
                                                  • QNAP
                                                  • Parallels
                                                  • Plex/NAS Compatibility Spreadsheet
                                                  • MoCA Bridge
                                                  • Plex Pass
                                                  • Plex Naming Primer
                                                  • Channels
                                                  • Homebridge
                                                  • Transmission
                                                  • Sonarr
                                                  • Jackett
                                                  • Backblaze 3-2-1
                                                  • Network Attached N00bs
                                                  • Plex Primer
                                                  • SSD Cache

                                                    • Support Imperfect on Patreon
                                                    Episode sponsors:
                                                    Soulver.App:

                                                    You’ve tried a calculator and a spreadsheet but if you haven’t tried Soulver yet you’re missing out on a great app that fits perfectly with the way your brain actually thinks. Soulver is available from Soulver.app and also through the Mac App Store.

                                                    Visit soulver.appto learn more.Many Tricks:

                                                    If you’re looking for some Mac software that can do Many Tricks remember to specifically visit the URL below for more information about their amazingly useful apps. Don’t forget the return of Usher with the Usher 2 Pre-Sale!

                                                    Visit manytricks.com/pragmatic and use the Coupon Code (listen to the episode to get the code) for 25% off the total price of your order. Hurry it's only for a limited time!

                                                    Episode Gold Producer:
                                                    'r'.
                                                    Episode Silver Producers:
                                                    Mitch Biegler, John Whitlow, Kevin Koch, Oliver Steele, Lesley Law Chan, Hafthor and Shane O'Neill.
                                                    1 hr 46 min

                                                  About Imperfect

                                                  From the publisher's feed

                                                  Most people can look past the imperfections of everyday things in the world. For those that are unable to, this is for you.