
38: Thunder River Rapids
01/24/21 • 36 min
With John Chidgey.
Investigation Report:
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 Causality 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.
With John Chidgey.
Investigation Report:
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 Causality 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.
Previous Episode

37: Variola Birmingham
In 1978 on the cusp of the eradication of SmallPox a Medical Photographer became infected and would ultimately die from the Variola virus. We look at how admiration, promotion and delegation led to a wholly avoidable outcome.
With John Chidgey.
Investigation Report:
Medical Analyses:
Links of Potential Interest:
- SmallPox
- History of Smallpox
- Biosafety Level 4
- A Bioweapon Expert Explains Four Ways A Pathogen Can Escape From A Lab
- Review of Medical Errors in Laboratory Diagnostics and Where We Are Today
- Pathogens Sometimes Escape the Lab With Deadly Results
- 1970s Chinese pandemic was a lab mistake
- Bio-Unsafety Level 3: Could the Next Lab Accident Result in a Pandemic?
- SmallPox is not Dead
- Caroline Foulkes looks back at the 1978 outbreak
- Smallpox virus retention debate
- Lessons learned from smallpox outbreak
Support Causality 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.
Next Episode

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 Causality 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.
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