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Max Ghenis
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Prediction markets and Taxes
Max Ghenis7mo21

Only if you itemize rather than taking the standard deduction!

For example, suppose you purchase a binary contract that pays $1 if an event occurs (and $0 if it doesn't) and you believe there's a 50% chance of the event. If you win, you receive $1 in gross winnings. With a 30% marginal tax rate and without itemizing, you'd pay tax on the full $1—leaving you with a net of $0.70. Given that you paid some amount x for the contract, your net gain on a win is $0.70−x, while a loss means you lose the entire x.

To break even, the expected value of the bet must be zero:

0.5×(0.70−x)+0.5×(−x)=0

This simplifies to:

0.35−x=0⟹x=0.35

Thus, if you believe the event is 50% likely (and considering only taxation, not other factors like transaction fees or opportunity costs), you would only gain if you paid under $0.35 for the contract.

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Ukraine Post #2: Options
Max Ghenis4y20

Even trickier is the canonical obviously correct but deeply unpopular policy, the Carbon Tax, or its more accepted incomplete alternative the Gasoline Tax. Insanely, there are calls for a gas tax holiday or other cut, at exactly the time when we need to reduce consumption. That’s why the price is going up. A price is a signal wrapped up in an incentive.

Carbon taxes actually poll strongly: an average of +36 net favorability across the 8 polls I've seen since 2020.

This might not be the time to push a carbon tax, but as you say, avoiding gas tax holidays would be similarly good. I created a campaign to do this, starting in California. We're currently called Save the Gas Tax, but will probably rename to Stop Oil Subsidies soon.

Following in the UK's footsteps with household transfers would be a much better use of funds if we want to spend to reduce pressure at the pump.

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[Letter] Russians are Welcome in America
Max Ghenis4y20

I generally agree with this, but I'd like to check my optimism against some forecasting questions on US immigration policy with respect to the war. I don't see anything on Metaculus here.

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Theses on Sleep
Max Ghenis4y20

Thanks for this post. To clarify, it sounds like your thesis is about duration of sleep, not quality of sleep? How's the evidence for sleep quality and life outcomes? (And what interventions improve it?)

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5Using Narrative Prompting to Extract Policy Forecasts from LLMs
10mo
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