Podbit · Stuff You Should Know
Pulsed dye lasers target a specific wavelength of light absorbed by the pigment of a birthmark but not by the surrounding skin. That light energy converts to heat inside the birthmark, destroying the clustered blood vessels. Multiple treatments can eliminate port wine stains — though it feels like hot bacon grease on the skin.
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At 35:00 · chapter starts 34:10
Josh walks through the treatment landscape: for most birthmarks, doctors take a 'watch and see' approach — examining, photographing, and tracking changes over time. The gold standard active treatment is the pulsed dye laser for vascular birthmarks, particularly port wine stains [1] — Josh Clark "Pulsed dye lasers target a specific wavelength of light absorbed by the pigment of a birthmark but not by the surrounding skin. That light …" 35:00 . The laser targets a specific light wavelength absorbed by the birthmark pigment but not surrounding skin, converting that light into heat and destroying the clustered blood vessels. Josh compares the sensation to hot bacon grease splashing on skin — not pleasant, which makes it poignant that the best time to start treatment is childhood. Pigmented birthmarks are harder to treat with consistent results. For those who want an alternative, the British Association of Skin Camouflage trains makeup artists in specialized techniques for covering birthmarks.
Port wine stain birthmarks respond well to pulsed dye laser treatment, which targets the specific pigment of the birthmark without damaging surrounding skin.
Anxiety is not fear. Fear has an object — a wolf, a threat. Anxiety is the vertigo of standing at the edge of infinite possibility and knowing that choosing any one thing closes off all the others. Kierkegaard argued that the depth of your anxiety is proportional to the depth of your potential.
AI nailed Andrew Huberman's vertigo-vs-low-blood-pressure diagnosis because that pattern has been reported millions of times. But every patient's liver is different and data on liver surgeries is scarce worldwide — making solo robot surgery dangerous. The rule is simple: data abundance means AI can help; data scarcity means keep the human in the loop.
Fei-Fei Li's father had liver surgery performed by a da Vinci robot guided by a surgeon. The result: 10 times less blood loss than a typical procedure. This isn't replacement — it's the gold standard of human-machine collaboration, where the human's judgment and the robot's precision combine.
US drug overdose deaths fell from 110,000 to roughly 70,000 — the biggest CDC-recorded single-year drop ever. Men's rates fell 27% in one year, and the steepest decline of all was among 15–24-year-olds, down 37%. The crisis narrative around young men needs to make room for signs of genuine progress.
Kessler thought his grief expertise would protect him. It didn't. When his son David died unexpectedly, he found himself on the floor — and eventually realized that acceptance alone wasn't enough. That unmet need became the sixth stage: finding meaning.
Grief isn't just death — it's any unwanted change. Kessler lectured at Coca-Cola and General Mills not because they had lots of funerals, but because change management is grief management. People who grieve well live well.
Witnessing someone's grief isn't just emotional support — it's an essential act of healing. Kessler argues grief is a severance and connection heals it. But real witnessing has two steps: seeing the pain AND affirming the person's capacity to recover.
Avoiding grief isn't free — it's exhausting. Kessler's beach ball metaphor nails it: pushing a small balloon down is easy, but holding a massive beach ball underwater takes constant, draining energy. Unattended feelings don't disappear; they just consume you.
Most people try to control their environment to avoid triggers. Kessler flips this entirely: triggers aren't problems to manage around — they're a detailed map to your pain and your healing. Every trigger points directly to what needs attention.
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