Obesity is a contributor to many different negative health outcomes. The simplest way to prevent obesity is to eat less. Unfortunately, it is inconvenient to track how much you are eating. A cheap device that passively tracks how often you snack could help the world at scale.

The hardest, riskiest part of this project is writing an algorithm that satisfies the following criteria.
1. Can run all day on a microcontroller.
2. Can learn to identify new gestures from a small quantity of data.
3. Can be sold cheaply.

I built such a device. As proof, here is a video of the device in action. The streaming numbers are acceleration, gyroscope and two intermediate features the device calculates.

 

I have completed the hardest, riskiest parts of this project. The only part left (besides retraining the algorithm with a wider variety of data) is "make a bracelet and sell it"—which is something I have already done. (I did it with a team of three people and a total budget of $96,000.)

I shut down the food tracking project because venture capital fundraising was pushing the project in a profit-oriented direction I didn't like. It has more recently been drawn to my attention that Effective Altruism (or a sister organization) might be able to fund it with a grant instead. I would happily resurrect the project tomorrow if I could get proper funding.

I have written a lot about rationality but I don't know much about the EA ecosystem. Is my project appropriate for EA? If so, how do I go about applying for funding.


The best way of contacting me is email.

10

0
0

Reactions

0
0
Comments5


Sorted by Click to highlight new comments since:

Some questions I would have if I was an EA grantmaker:

  • Is this really super-scalable?  How many people would buy a dedicated gesture-detecting device?  Would it be better to write software for a device like a Fitbit or Apple Watch, which millions of people already own?
  • Wouldn't people learn to ignore the notifications over time?  If I put a post-it note on my fridge saying "stop snacking!", that might cause me to think twice a few times, but eventually I might just start ignoring the post-it.
  • Even if wearing the device was 100% effective at eliminating unconscious snacking, would this make a dent in obesity?  Wouldn't people just get hungrier and then eat more at meals?  The path between "use your willpower to snack a bit less" and "actually lose weight and keep it off" is absolutely notorious for being convoluted, impenetrable, and largely uncharted by modern scientific understanding.  My prior on proposed obesity interventions actually working is very low.

Is this really super-scalable?

Yes. We could sell these things for <$50.

How many people would buy a dedicated gesture-detecting device?

More than 1/100 people. We have done market research.

Would it be better to write software for a device like a Fitbit or Apple Watch, which millions of people already own?

Surprisingly, the answer is no. The Apple Watch (last time we checked) didn't support this kind of software. But more importantly, most of our potential customers own no smartwatches or Fitbits at all. Also, the smartwrist ecosystem is fragmented so we'd have to write new apps for every different model and update them whenever the manufacturer changes something.

In our trichotillomania project, we first tried putting software on others' devices. It was a disaster. When we started making our own wearables everything just worked.

Wouldn't people learn to ignore the notifications over time? If I put a post-it note on my fridge saying "stop snacking!", that might cause me to think twice a few times, but eventually I might just start ignoring the post-it.

Our experience talking to people and selling similar devices for trichotillomania suggests the answer is close enough to "no" to make our device worthwhile.

Even if wearing the device was 100% effective at eliminating unconscious snacking, would this make a dent in obesity? Wouldn't people just get hungrier and then eat more at meals?

The device also counts how many bites you take during a meal. Users would have to change what they eat or how much they eat per bite in order to hack Snackwatch's metric.

proper funding

Can you give a range? Also, how much would you be happy to sell a prototype for?

how do I go about applying for funding

I would say, come up with a Fermi estimate of where the value proposition is coming from, e.g. from preventing obesity, from being a good investment, etc. Then apply to the either the relevant EA Fund or to the Future Fund

I would also be curious if you can come up with a project you'd be more excited to lead.

[comment deleted]0
0
0
Curated and popular this week
 ·  · 22m read
 · 
The cause prioritization landscape in EA is changing. Prominent groups have shut down, others have been founded, and everyone’s trying to figure out how to prepare for AI. This is the third in a series of posts critically examining the state of cause prioritization and strategies for moving forward. Executive Summary * An increasingly common argument is that we should prioritize work in AI over work in other cause areas (e.g. farmed animal welfare, reducing nuclear risks) because the impending AI revolution undermines the value of working in those other areas. * We consider three versions of the argument: * Aligned superintelligent AI will solve many of the problems that we currently face in other cause areas. * Misaligned AI will be so disastrous that none of the existing problems will matter because we’ll all be dead or worse. * AI will be so disruptive that our current theories of change will all be obsolete, so the best thing to do is wait, build resources, and reformulate plans until after the AI revolution. * We identify some key cruxes of these arguments, and present reasons to be skeptical of them. A more direct case needs to be made for these cruxes before we rely on them in making important cause prioritization decisions. * Even on short timelines, the AI transition may be a protracted and patchy process, leaving many opportunities to act on longer timelines. * Work in other cause areas will often make essential contributions to the AI transition going well. * Projects that require cultural, social, and legal changes for success, and projects where opposing sides will both benefit from AI, will be more resistant to being solved by AI. * Many of the reasons why AI might undermine projects in other cause areas (e.g. its unpredictable and destabilizing effects) would seem to undermine lots of work on AI as well. * While an impending AI revolution should affect how we approach and prioritize non-AI (and AI) projects, doing this wisel
 ·  · 4m read
 · 
TLDR When we look across all jobs globally, many of us in the EA community occupy positions that would rank in the 99.9th percentile or higher by our own preferences within jobs that we could plausibly get.[1] Whether you work at an EA-aligned organization, hold a high-impact role elsewhere, or have a well-compensated position which allows you to make significant high effectiveness donations, your job situation is likely extraordinarily fortunate and high impact by global standards. This career conversations week, it's worth reflecting on this and considering how we can make the most of these opportunities. Intro I think job choice is one of the great advantages of development. Before the industrial revolution, nearly everyone had to be a hunter-gatherer or a farmer, and they typically didn’t get a choice between those. Now there is typically some choice in low income countries, and typically a lot of choice in high income countries. This already suggests that having a job in your preferred field puts you in a high percentile of job choice. But for many in the EA community, the situation is even more fortunate. The Mathematics of Job Preference If you work at an EA-aligned organization and that is your top preference, you occupy an extraordinarily rare position. There are perhaps a few thousand such positions globally, out of the world's several billion jobs. Simple division suggests this puts you in roughly the 99.9999th percentile of job preference. Even if you don't work directly for an EA organization but have secured: * A job allowing significant donations * A position with direct positive impact aligned with your values * Work that combines your skills, interests, and preferred location You likely still occupy a position in the 99.9th percentile or higher of global job preference matching. Even without the impact perspective, if you are working in your preferred field and preferred country, that may put you in the 99.9th percentile of job preference
 ·  · 6m read
 · 
I am writing this to reflect on my experience interning with the Fish Welfare Initiative, and to provide my thoughts on why more students looking to build EA experience should do something similar.  Back in October, I cold-emailed the Fish Welfare Initiative (FWI) with my resume and a short cover letter expressing interest in an unpaid in-person internship in the summer of 2025. I figured I had a better chance of getting an internship by building my own door than competing with hundreds of others to squeeze through an existing door, and the opportunity to travel to India carried strong appeal. Haven, the Executive Director of FWI, set up a call with me that mostly consisted of him listing all the challenges of living in rural India — 110° F temperatures, electricity outages, lack of entertainment… When I didn’t seem deterred, he offered me an internship.  I stayed with FWI for one month. By rotating through the different teams, I completed a wide range of tasks:  * Made ~20 visits to fish farms * Wrote a recommendation on next steps for FWI’s stunning project * Conducted data analysis in Python on the efficacy of the Alliance for Responsible Aquaculture’s corrective actions * Received training in water quality testing methods * Created charts in Tableau for a webinar presentation * Brainstormed and implemented office improvements  I wasn’t able to drive myself around in India, so I rode on the back of a coworker’s motorbike to commute. FWI provided me with my own bedroom in a company-owned flat. Sometimes Haven and I would cook together at the residence, talking for hours over a chopping board and our metal plates about war, family, or effective altruism. Other times I would eat at restaurants or street food booths with my Indian coworkers. Excluding flights, I spent less than $100 USD in total. I covered all costs, including international transportation, through the Summer in South Asia Fellowship, which provides funding for University of Michigan under