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Martha Fiehn

@marthaf.bsky.social
1.9K followers 1.9K following 358 posts

PhD student at UCSD Econ. Tax, Labor, and Law. From Berlin and California. Previously: Harvard, Yale, UC Berkeley, SciencesPo

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Martha Fiehn @marthaf.bsky.social · 10/07/2025
Universities tend to have strict branding guidelines, including with respect to colors. I suspect that Columbia Blue would have been the appropriate color to use for official communications.
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Martha Fiehn @marthaf.bsky.social · 28/05/2025
fun fact that might explain the different pronounciations!
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Martha Fiehn @marthaf.bsky.social · 15/04/2025
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Martha Fiehn @marthaf.bsky.social · 14/04/2025
It looks like there’s been some downward revision. Googling now I also see 5.2. It was the strongest one I’ve felt before!
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Martha Fiehn @marthaf.bsky.social · 14/04/2025
The whole building shook right in the middle of micro theory! It’s probably a sign that I should pay more attention to mechanism design
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Martha Fiehn @marthaf.bsky.social · 16/03/2025
My garden’s first strawberry harvests 🥰
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Martha Fiehn @marthaf.bsky.social · 11/02/2025
My tomatoes finally germinated! (Something unrelated to anything else)
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Martha Fiehn @marthaf.bsky.social · 03/02/2025
My grandparents, my sister and her family, and my BIL’s mom have all been going to the protests (pic from my grandma)
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Martha Fiehn @marthaf.bsky.social · 24/01/2025
These seeds are meant to be planted before the annual rain season. But it’s been the driest winter in 150 years — since they started recording. So I still planted them now. Hopefully it will rain on Sunday 🌧️🌷🌻 and help put out some of the fires
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Martha Fiehn @marthaf.bsky.social · 21/01/2025
“Winter” quarter
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Martha Fiehn @marthaf.bsky.social · 21/01/2025
Here’s a picture of my snap dragons if you want to live in San Diego vicariously
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Martha Fiehn @marthaf.bsky.social · 19/12/2024
Unrelated, but I thought of you yesterday.
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Martha Fiehn @marthaf.bsky.social · 16/12/2024
lol Rahm Emmanuel went on about it on the Ezra Klein show again recently and I was like…. Dude. Not a winning strategy. Out of all the social media platforms I use, I see the *least* amount on TikTok. Like I made this yesterday with a TikTok recipe
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Martha Fiehn @marthaf.bsky.social · 11/12/2024
looked her up to see if this is a recent development. Not so much
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Martha Fiehn @marthaf.bsky.social · 11/12/2024
Hahah they still turned on heaters today
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Martha Fiehn @marthaf.bsky.social · 06/12/2024
idk, this is from the AEA and I doubt it'd be much different for other other journals, other than that the share of R, Julia, and Python has likely been growing over time 10.1257/pandp.110.764
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Martha Fiehn @marthaf.bsky.social · 06/12/2024
so much "r vs stata" debate but this 2018 QJE I was gonna use for a replication project uses SAS...
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Martha Fiehn @marthaf.bsky.social · 03/12/2024
the monetary cost to me is very low but my awareness has been raised significantly
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Martha Fiehn @marthaf.bsky.social · 03/12/2024
I wonder if these kinds of tax breakdowns affect attitudes toward taxation, voting behavior and/or migration decisions by making regional taxes more salient. Cuz on the one hand I'm like "wow 0.25% is not that much" but on the other I'm like "I wonder if taxes are lower in the next county over"
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Martha Fiehn @marthaf.bsky.social · 01/12/2024
68F (20C) in San Diego today. You really wouldn’t know it’s December and I love it.
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Martha Fiehn @marthaf.bsky.social · 29/11/2024
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Martha Fiehn @marthaf.bsky.social · 27/11/2024
hoping that my micro TA is old enough that they still watched Bill Nye in school
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Martha Fiehn @marthaf.bsky.social · 24/11/2024
Was super nice all day down here but started raining this evening as well
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Martha Fiehn @marthaf.bsky.social · 20/11/2024
Okay I already sent this to Scott, but in the name of chatter will share this interaction today that just endlessly amuses me. (Dating is my favorite non-academic conversation topic)
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Martha Fiehn @marthaf.bsky.social · 18/11/2024
Being back in New Haven last weekend affirmed that I don’t need seasons in my life, like at all. I wore a short-sleeved, above-knee dress today and had dinner outside— the way the Californian God intended.
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Martha Fiehn @marthaf.bsky.social · 17/11/2024
But interestingly, this distinction in your example likely stood out to me because I’m a German speaker: we have both “rosa” which is red with a bunch of white mixed in (so ombré) and “pink,” which is on the gradient between red and blue. English might just call the shade 2nd from R “pink.”
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Martha Fiehn @marthaf.bsky.social · 17/11/2024
(Trust me. Gradients are my whole life)
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Martha Fiehn @marthaf.bsky.social · 16/11/2024
like consumer surplus is explicitly incorporated and mentioned in the pape. (And if we want to get into semantics, I think for our intents and purposes, the differentiation between consumer surplus and consumer welfare is inconsequential).
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Martha Fiehn @marthaf.bsky.social · 16/11/2024
(Now if I’d stayed in Louis Kaplow’s class maybe I’d be able to debate on legal grounds better, but the registrar technically only allowed auditing one course and I was already in employment law and semi-clandestinely in tax law)
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Martha Fiehn @marthaf.bsky.social · 16/11/2024
It's not immediately clear to me why we should prioritize legal definitions of consumer welfare over economic ones. Now IO is not my field -- would love to hear what @florianederer.bsky.social thinks and what recent empirical evidence indicates
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Martha Fiehn @marthaf.bsky.social · 16/11/2024
I mean, there *is* this space ship- looking Mormon temple close to UCSD campus I see every day.
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Martha Fiehn @marthaf.bsky.social · 16/11/2024
x.com/JakeMGrumbac... this is also what I have in mind
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Martha Fiehn @marthaf.bsky.social · 16/11/2024
From the Survey of Consumer Finances, 58% of people expected to be better off financially but 61% expected to worse business conditions. Seems like a disconnect
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Martha Fiehn @marthaf.bsky.social · 16/11/2024
Wages increased the most for the bottom decile
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Martha Fiehn @marthaf.bsky.social · 14/11/2024
Post feels oddly personal
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Martha Fiehn @marthaf.bsky.social · 12/11/2024
I’m suspicious that a retriever might be too happy-go-lucky to be an Econ grad student. Maybe you’re a lab student, though 🧬⚗️
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Martha Fiehn @marthaf.bsky.social · 31/10/2024
Arrow-Debreu Equilibrium with Uncertainty be like
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Martha Fiehn @marthaf.bsky.social · 01/10/2023
My second loaf ever! Straight out of the oven just now. Crust was heavenly last week
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