Working at Harvard in the late 1800’s and early 1900’s as a “Computer”, Annie Jump Cannon cataloged stars using their spectra from photographic plates, in an effort to understand the mysteries and peculiarities of stellar spectra.

This was hard, detailed, nuanced work. By 1889, three years into her work, she had classified over 1,000 stars. By 1913, she could classify 200 stars an hour. She could classify three stars a minute, just by sight. Using a magnifying glass, she could classify stars down to 9th magnitude, 16 times fainter than the human eye can see. And she did this all with exceptional accuracy.

Over the course of her career, she personally classified more than 350,000 stars, accounting for a mind-boggling 98% of all contemporary stellar spectra classifications, a feat that wouldn’t be bested until the 1990’s with automated digital sky surveys.

Cannon used these classifications to develop the Harvard spectral classification system (O–B–A–F–G–K–M), organizing stars by surface temperature and physical properties.

It is hard to overstate just how foundational her work was to modern astronomy and astrophysics. Her classifications have enabled more than a century of breakthroughs in stellar structure and evolution, including the understanding of how stars change over time and how temperature, luminosity, and composition are related. The system underpins the Hertzsprung–Russell (HR) diagram, one of the most important tools in astrophysics, and remains embedded in modern research, from stellar population studies to galaxy evolution.

The game treats the Miis like they’re real people and makes zero mention ever that they are not, and only ever refers to them and their POV as if they are real and you are their caretaker! While playing this honestly messed with my head pretty badly at times and made me worry a lot on if I was hurting real people/not doing enough for real people while I was playing!

I cannot imagine how much worse this would be for someone who’s unmedicated, non-dormant, or experiencing breakthrough symptoms! Do please be careful and PLEASE remember to have a way to reality check yourself while playing the game!!!

The way I explain it to my patients is that our neurons don’t regenerate. They make connections with each other and that’s it. If you don’t use your brain, they make fewer connections and, if one of them dies, you’re gonna miss it, because that was the only one that knew how to do X. Now, if each one of them has many, many connections, you won’t notice the difference when one of them dies. The others pick up the slack.

As of 2024, 45% of dementia risk factors are modifiable. Relevant to this conversation, 5% for less education and 5% for social isolation.

We absolutely are going to see the reflection of this, but it’s gonna take decades and it’ll be too late. So, for the love of your brain, pretend that it’s a muscle and make it work. People complain about “when am I ever gonna use this maths formula in my life?” You’re not. You’re teaching your brain to think logically. Those sinapses will be there for when you need to figure out your week’s schedule. English classes taught me how to interpret data and how to convey it in this text so it’s clear and you understand what I’m saying, not because I needed to justify why the curtain is blue.

Make your brain know how to do different things. Logic games, puzzles, taking care of a garden even if small, planning a church’s event or birthday, learn a new instrument, learn a few words in another language, look at a calendar every day, do some manual labor if possible. Do not, I repeat, do not let your brain get rid of sinapses by letting AI do everything. Your brain uses 20% of your body’s energy — do you really think it’s going to maintain connexions that aren’t in use?

Most cases of Alzheimer’s are sporadic, meaning no family history. Family history of a first-degree relative with Alzheimer’s starting before they were 80yo increases your risk in 2-3x on average.

Today it’s mostly famous for what it looks like on the inside.

It has an equestrian staircase though it’s so smooth it’s really just a gentle slope more than a staircase. It was build like that so our lazy bum king could ride his horse all the way to the top (king not in photo)

And naturally people have also driven cars up the tower

And held a bike race

For a while it was just sort of abandoned by the authorities and became a sloping marketplace

But today it has been restored and become a tourist spot as well as a popular destination for school trips. And yes, you can still watch the cosmos at the top.