Sara Hastings-Simon 🇨🇦
@shastingssimon.bsky.social
17K followers 1.1K following 3.6K posts
Currently on partial medical leave and Associate professor, Dept of Earth, Energy, and Environment, University of Calgary; co-director http://NZERI.ca; energy/carbon/innovation policy + bikes.
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shastingssimon.bsky.social
Hi from Alberta where I’m a professor at University of Calgary in the dept of earth energy and environment. I’m a physicist turned mgmt consultant turned think tanker now researching the energy transition. I love e-bikes and etrikes. And I’m currently on med leave fighting breast cancer.
shastingssimon.bsky.social
And fuzzy alpaca vest is done! I quilted the knitting to the flannel lining and it worked very well. I think it will keep the knit from stretching out over time.
#knitting
Fuzzy light tan colour alpaca vest with dark buttons laying flat on a table
shastingssimon.bsky.social
retweeting because this is buried at the end of a too long tweet thread but I believe 100% that overusing warning labels is partially about downloading systemic issues including pollution and failure of health care/public policy onto individuals.

its like the carbon calculation 2.0
shastingssimon.bsky.social
The vast vast vast majority of ppl who see this warning label will never do this calculation. Hell I've done the calculation and I still feel guilty.

And it's also enabling the downloading of systemic issues (health disparities, pollution, etc) on people unfairly.
shastingssimon.bsky.social
phew this was a bit long, sorry. With that I'm done and I think I need to go get a drink 🍺
shastingssimon.bsky.social
The vast vast vast majority of ppl who see this warning label will never do this calculation. Hell I've done the calculation and I still feel guilty.

And it's also enabling the downloading of systemic issues (health disparities, pollution, etc) on people unfairly.
shastingssimon.bsky.social
I think we need to consider the general impact of making people feel bad for how they "caused" their cancer. This is also a real mental distress that will be experienced by 100% of people who get cancer, and in the vast majority of cases it was nothing they did (it was luck, systemic issues, etc)
shastingssimon.bsky.social
So we are labeling beer bottles because of a 1% increase due to moderate drinking but not screening women with a 2-3% risk of developing cancer.
shastingssimon.bsky.social
*sidenote this is based on a flawed study but thats for another thread.

So let's look at the risks.
The risk of being diagnosed with breast cancer before the age of 50 is like 2-3%.
shastingssimon.bsky.social
How so?
The justification* for the recommendation that women in Canada start breast cancer screening at the age of 50 is based on the downside of screening being the worry one has to go through when there is an abnormal finding that might be cancer but isnt. false positives
shastingssimon.bsky.social
This could lead to people discounting risks for cancer that a much higher because they get risk overload (im looking at you CA/prop65). Again out of my wheelhouse but still.

But to come back to breast cancer, we actually recognize the risk of mental worry (someone gets me!_
shastingssimon.bsky.social
Now sure, thats just breast cancer, there are other cancers too, and a risk is a risk, so why wouldn't we want to tell people so they can be aware and reduce their risk?

Well there is a downside to it all. One, if everything is a risk, how do we know what to worry about
shastingssimon.bsky.social
Of course the underlying risk goes up over time, so the risk from drinking does as well. The lifetime risk of developing breast cancer is something like 12%.

So the additional risk of a breast cancer diagnosis from drinking "moderately" is about 1% over your life.
shastingssimon.bsky.social
Now I'm going to do some hand wavy not perfect math but it will get the point across.
My risk of getting diagnosed by that age was a bit less than 1% so lets call it 1%.

That means my risk of getting diagnosed specifically because I enjoy a nice IPA was, generously, 0.1%.
shastingssimon.bsky.social
lets get personal, I got diagnosed with breast cancer in my early 40s. According to the stats I can find my risk of getting diagnosed with breast cancer was "7–10 percent higher", it might have been up to 20% higher if I had drank more heavily than I did.
shastingssimon.bsky.social
disclaimer: I understand alcohol is bad for lots of reasons and I am not qualified to say what kind of general measures that justifies taking.
But when it comes to cancer (again quick googling), I can find the stat that "up to six percent of cancer diagnoses are linked to cancer risk".
shastingssimon.bsky.social
The article makes the comparison to lung cancer risk cigarettes. This one case is quite extreme (and therefore I think more than justified). Some quick googling shows that cigarette are responsible for something like 80-90% of lung cancer deaths and maybe as high as 15% percent of smokers get cancer
shastingssimon.bsky.social
as someone who thinks a lot about data and has cancer I have mixed feelings about these kinds of warning labels about cancer risk (not just on alcohol but on most of the things that one can do to reduce cancer). 🧵https://www.cbc.ca/news/politics/senate-alcohol-warning-9.6933765
Senate debates bill to add warning labels to alcohol packaging | CBC News
Sen. Patrick Brazeau is trying a second time to pass legislation that would add cancer warning labels to alcohol packaging.
www.cbc.ca
shastingssimon.bsky.social
We talk about the need to enforce regulations against things that are not really bike.
There may be people that mix them up but most US states have laws that differentiate between ebikes (class 1 and 2) and motorized bicycles or electric motor bikes already. eg:

letrigo.com/blogs/regula...
Massachusetts Electric Bike Laws 2025 Explained
Understand Massachusetts electric bike laws: classifications, where to ride, helmet rules, licensing, and safety tips for a compliant and enjoyable e-bike experience.
letrigo.com
shastingssimon.bsky.social
I love this! Cookies are the Solar Panels :)
shastingssimon.bsky.social
Economies of scale is batch cooking, so the average for each dish goes down.

There is a tenuous one between partially prepared ingredients (store bought sauces, pre chopped veg) and making it faster and material cost.
shastingssimon.bsky.social
In the tortured analogy department - I decided today that cooking is the best analogy for explaining learning rates:

Getting faster at cooking something over time is a learning rate.

This can be decomposed into parts:

You just figure out how to do it better (learning by doing)
shastingssimon.bsky.social
IDK if this is funny but imagining the slang I hear from my kids being used to write the significance statement of a paper submission we are working on:

This model fills a key gap in current approaches to representing X that are sus and based purely on vibes.
shastingssimon.bsky.social
How have I never heard this? I love it
jasonrwang.bsky.social
My friendly amendment to the fusion joke: Fusion hasn't been 10 years away for the last 100 years – it's always been 8.3 minutes from us! ☀️😎
shastingssimon.bsky.social
www.youtube.com/watch?v=EFUh...
This was a fun @energyvsclimate.bsky.social to record, I hope its as fun to watch/listen. A bit different, we cover a bunch of new(ish) energy tech with our hot takes, and end on an important note that part of being an expert is admitting when you just dont know.
shastingssimon.bsky.social
I think ebikes are the highest likelihood topic