The World in Time / Lapham’s Quarterly
Apr 10, 2026 · 1 hr 27 min · 12 segments
“The tree is this living skin wrapped around a dead core,” says Robert Moor on this week’s episode of The World in Time. “You have this skin of living wood that’s being produced by the cambium, and…
Robert MoorGuest
Donovan HohnHost
There's a great story of Richard Feynman doing this experiment with ants on his bathtub where he put a sugar cube on one side and he watched the first ant make this really wiggly, windy trail and find the sugar.

And then over time, as the other ants followed that first ant's trail, they shaved off all those curves until it had a perfectly straight line.

A tree has to hold on to its past mistakes just by its basic biological mechanism.

And of course, as I want to do, sort of draw this deeper philosophical lesson from that, that there is ways in which our lives are like that as well.

And we have to sort of learn to grow beyond it rather than hoping to travel back in time and make it something different.

Some of these trees are 1,000 years old, so they've changed hands from one bonsai master to another over time, and they're constantly revising one another's work.

I mean, I don't think we have an art form comparable to that, where you would have one author rewriting another author's work again and again over the course of a millennium.

There's a great story of Richard Feynman doing this experiment with ants on his bathtub where he put a sugar cube on one side and he watched the first ant make this really wiggly, windy trail and find the sugar.

And then over time, as the other ants followed that first ant's trail, they shaved off all those curves until it had a perfectly straight line.

A tree has to hold on to its past mistakes just by its basic biological mechanism.

And of course, as I want to do, sort of draw this deeper philosophical lesson from that, that there is ways in which our lives are like that as well.

And we have to sort of learn to grow beyond it rather than hoping to travel back in time and make it something different.

Some of these trees are 1,000 years old, so they've changed hands from one bonsai master to another over time, and they're constantly revising one another's work.

I mean, I don't think we have an art form comparable to that, where you would have one author rewriting another author's work again and again over the course of a millennium.
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