Evolutionary Naïveté (Blue Ash)
Completely Arbortrary
Completely Arbortrary
4.8 • 1.3K Ratings
🗓️ 22 January 2026
⏱️ 65 minutes
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Summary
When the emerald ash borer came to North America, few ashes survived. But one native species, the blue ash (Fraxinus quadrangulata), survived. How did this lucky survivor beat the odds?
Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson
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Cover art by Jillian Barthold
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Transcript
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| 0:00.0 | Hey everybody, Casey here. This is our fifth year making completely arbitrary. And to celebrate our |
| 0:06.8 | cone of the month for this month, December 2025, is actually five cones. That's right. We're making a |
| 0:14.1 | sticker sheet with five individual cones on it, one from every year we've been making this show. |
| 0:20.1 | And we want you to get them, which means |
| 0:22.0 | now is the best time to support the podcast at arbitrarypod.com. But we're not just leaving |
| 0:27.8 | into that. Right now, 760 of our dearest fungal associates are supporting the pod as |
| 0:33.1 | Tremium members. If we get to 800 subscribers by the end of 2025, then we're giving everyone a bonus sticker. |
| 0:42.2 | That's right. Every single supporter, regardless of the tier you're signed up for, if we get to 800, |
| 0:47.9 | everyone gets a bonus sticker. Now, to sweeten the deal even more, if you sign up now, this month only, |
| 0:53.4 | you'll get 15% off your first three months at either |
| 0:57.1 | support tier. |
| 0:58.0 | And if you're currently a subscriber at the tree hugger level and you want that sticker sheet, |
| 1:02.0 | you can get 15% off your first three months if you upgrade to the cone club. |
| 1:06.5 | So go over to arbitrary pod. |
| 1:07.9 | dot supercast.com and become a tremium member today or give it as a gift |
| 1:13.2 | to that tree lover in your life. Help us celebrate five years of completely arbitrary today. And thank you |
| 1:19.1 | so much. |
| 1:25.4 | What's up, Fungal Associates? Welcome to Completely Arbitrary Season X. Oh, it's the show about trees. Oh, he panicked. He got too intense. I had to switch back to my normal character. It's the podcast about trees and other related topics. I'm one of your hosts. My name is Alex Crozen. Of course, over there on the big green couch. We have Casey Clap. This is me. Normal character. |
| 1:47.7 | Alex, I have an existential question for you. Hit me. |
| 1:50.3 | If you are playing your normal character, is that a character? Or is that just, |
| 1:56.3 | you? That's a character. That's normal character. |
| 1:59.4 | So normal character is like, like you're the species variety. You're just, you're just, you're, uh, null hypothesis. It's called masking, my friend. Even when I am myself, I am someone else. No. Like Patrick, like Patrick Bateman. Who are you? Wow. Okay. I'm nothing like Patrick Bateman. Who's Patrick Bateman? American Psycho. Oh, I'm thinking Jason Bateman. Yes, of course. Huh. Not the guy I'm thinking of. Not psychotic. However, he is American. He has been known to do a more intense thriller type of things more recently. That's true. He's getting into that. Ozark. I heard Ozark is great. I've heard Ozark is great. I like Jason Bateman quite a bit. I know I'm from his best role, which is from Arrested Development. The best television comedy ever made. Yep. Say no more. Yeah. Casey, as much as I would fucking love it, this show is not about TV. |
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