Podcast Introduction and Year-End Reflection

• Final episode of 2023 for Stuff You Should Know podcast
• Josh, Chuck, and Jerry hosting
• Spotify Wrapped statistics shared by listeners
  • Top listener: Aravan Canera with 86,772 minutes (25-30 hours/week)
  • Downloaded in 163 countries out of ~190 total
  • Mexico third biggest growth country
• Considering Mexico City live show if 1,000+ people interested

Episode Concept and Historical Context

• Reversing typical smugness about past practices
• Examples of recent "barbaric" practices:
  • Smoking on airplanes in mid-90s (last 3 rows)
  • Weird jello molds from 50s-70s
• Focus on predicting what future generations will judge current practices for

Spanking Children

• Current American attitudes split: 50% support "good hard spanking" for discipline
• Massive decline from 1968 when 94% supported spanking
• Generational divide: only 33% of 18-29 year olds support vs 50% overall
• Research findings:
  • No studies show spanking improves behavior
  • Multiple studies suggest it maladjusts children
  • 2018 study of 400,000 children from 88 countries
    • 62 countries have banned spanking (starting Sweden 1979)
    • School fighting reduced 69% (boys) and 42% (girls) in ban countries
• US school corporal punishment:
  • Legal in 17 states (90% of schools don't use)
  • Mississippi leads in usage
  • Black males twice as likely to be spanked
  • 60.5% of corporately punished students are disabled

Chemotherapy

• Current success: 25% reduction in cancer death rate since 1990s
• Problem: indiscriminate harm to entire body while killing cancer cells
• Future alternatives emerging:
  • Antibody drug conjugates: monoclonal antibodies deliver chemo directly to specific tumors
  • mRNA vaccines: originally developed for tumors, repurposed for COVID
  • Personalized cancer care: AI-assisted analysis of specific tumor genetics
  • Treatment tailored to individual tumor characteristics ("naming the tumor Melvin")
• AI reducing costs of precision treatments
• Future prediction: cancer becomes chronic manageable disease like diabetes

Organ Transplants

• Current problems:
  • 10-15% rejection rates for kidneys
  • 17 Americans die daily waiting for organs
  • 1 in 5 donated kidneys goes unused
  • Inequitable distribution favoring wealthy
• Future solution: organogenesis (growing organs from scratch)
• Current achievements:
  • Successfully transplanted: windpipes, bladders, epidermis
  • Skin grafts from patient's own stem cells using fibrin protein
  • 3D bioprinting of ears showing major improvements
• Intermediate step: growing organs in animals (ethical concerns)
• Goal: eliminate need for organ donation entirely

Eating Meat from Animals

• Current environmental impact:
  • Livestock accounts for 14.5% of global greenhouse gas emissions
  • UN predicts 50-100% increase in meat demand by 2050
• Trend toward reduced meat consumption in wealthy countries
• OECD prediction: world moves away from "carcass meat" around 2075
• Alternatives developing:
  • Novel vegan meat replacements (Beyond, Impossible)
  • Lab-grown/cultured meat using bioreactors and 3D bioprinting
• AT Kearney prediction: 60% of global meat consumption from cultured/plant-based by 2040
• Technical challenges:
  • Texture replication (Japanese recreated wagyu steak in 2021)
  • Currently requires fetal bovine serum from unborn calves
  • Dutch company Meatable created sausage without animal death (July 2022)

Driving Cars Yourself

• Prediction: car ownership becomes obsolete due to ride-hailing ubiquity
• Self-driving cars despite current setbacks:
  • Cruz suspended in California after pedestrian incident
  • Current problems: blocking ambulances, running red lights, stopping on injured pedestrians
• Intermediate steps already present:
  • Lane assistance, drowsiness alerts, speed monitoring
• Safety justification:
  • 94% of accidents involve human error
  • 30-33% of fatal crashes involve drunk drivers
  • 30% of metropolitan traffic is people looking for parking
• Benefits: reduced accidents, pollution, traffic congestion

Economic Progress Measurement

• Current focus: GDP growth as primary national success metric
• Future shift toward:
  • Human physical and mental well-being
  • Environmental health
  • Deaths of despair reduction
  • Resource depletion consideration
• Younger generations already thinking this way
• Peter Singer's "expanding circle of concern" concept
• Shift from conspicuous consumption to charitable giving as status symbol

Burning Fossil Fuels

• Most certain future judgment area
• Health impacts:
  • 50,000 premature deaths annually from air quality
  • $600 billion annual healthcare costs in US
  • WHO: 250,000 additional deaths yearly 2030-2050 from climate change
• Younger generations already view previous generations as barbaric
• RHS Financial prediction: oil market collapse this decade
• Environmental consequences will be major source of future resentment