The weekly issue

One email. Four rabbit holes. Zero hot takes.

Every Sunday morning. The week’s most interesting rabbit holes from the podcasts we tracked, with the sources already attached.

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Latest rabbit holes

5 rabbit holes published so far.

No. 01

When the Pace Breaks the Welcome: The Math of Demographic Speed and Social Friction

A demography-and-jobs lens on why fast inflows, not just fiery words, can make good neighbors feel like strangers.

No. 02

Does caffeine timing matter as much as people say?

The delay-coffee-90-minutes rule is everywhere. The data behind it is thinner — and more interesting — than the rule suggests.

No. 03

What do we actually know about dopamine and phone use?

"Dopamine hits" is the most-used neuroscience phrase on the internet. The science it points to is real — and not quite what people think.

No. 04

How much does morning sunlight actually affect your sleep?

The viral claim is ten minutes outside fixes everything. The literature is friendlier than that — and more specific.

No. 05

Is cold plunging really better than a hot shower for recovery?

The recovery science is messier than the YouTube thumbnails suggest. Here is where the evidence actually lands.