Dear Hank & John 433: Making the Ice
Nov 19, 2025
Why are there so few left-handed people and how might evolution play a role? Explore the fascinating instinct vs learning debate in how animals build their nests. What’s the deal with babies not sleeping through the night? Unpack the reasons behind human parenting decisions and the social nuances involved. Plus, dive into quirky conversation starters that can sour a chat, and catch up on exciting updates about Mars exploration and more. It’s a whirlwind of science, societal musings, and personal tales!
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Air Is Stuff; Populations Are Bigger Than You Think
- Air is made of real stuff and that matters for understanding the world around us.
- There are far more people than you think, which changes how systems and policies must operate.
Why Left-Handedness Persists
- Handedness is consistently skewed (about 10% left-handed) across cultures and species.
- Its evolutionary cause and biological mechanism remain uncertain despite hypotheses involving combat advantage and cellular microtubules.
Instinct Plus Practice Explains Complex Behavior
- Complex animal behaviors often combine instinctual elements with learning and practice.
- Birds and mammals show innate tendencies that get refined by doing and social context.