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Today I Learned · by Piotr Zieliński · 2026-08-29

Antikythera mechanism made me rethink a small assumption from the library

en.wikipedia.org

I started this because my commute felt a little stuck, and history seemed like a manageable place to experiment. The funny part is that the smallest change was the one I kept.

I know this is a tiny sample size, but after 10 attempts the pattern is pretty clear. When I keep the setup simple, I actually follow through.

I started this because my commute felt a little stuck, and culture seemed like a manageable place to experiment. The funny part is that the smallest change was the one I kept.

My current rule is simple: if it takes less then 9 minutes to prepare, I am much more likely to keep doing it

256 sparks · 30 comments

Comments

Mara Fischer · 32 likes

glad you shared it; small wins count. The surprising part is easy to underestimate

Minh Nguyen · 4 likes

good clarification — I read it differently at first

Avery Johnson · 15 likes

I do not have a strong take but the rethink detail is useful. This is where I would ask one more question before choosing

Sleepy Noodle · 40 likes

This is the gentle version of my rant

Sleepy Comet · 1 likes

I needed the reminder to start smaller

Piotr Zieliński · 1 likes

Exactly; the hidden cost is energy

Mateo Cruz · 13 likes

Wonderful detail. It makes the whole thing feel real. I care less about the perfect answer and more about repeatability

Miguel Santos · 13 likes

That is a surprisingly elegant way to frame it. It sounds small, but the recipe matters

Minji Kim · 5 likes

The Tuesday test is undefeated

Yui Tanaka · 3 likes

Now I want a spreadsheet

Piotr Zieliński · 2 likes

@quiet_minji That made the concept click

Cozy Mango · 2 likes

Exactly; the hidden cost is energy

Chiara Romano · 12 likes

Love the tiny experiment energy. I would love to see a follow-up after 4 weeks

Camila Soto · 7 likes

that is a good question for people with more experience than me. The 3-minute rule is underrated

Rizky Pratama · 5 likes

That last line is excellent. I would love to see a follow-up after 3 weeks

Sleepy Rider · 5 likes

I wish more posts had this much context. I learned that one the expensive way. People underestimate how much sleep changes the answer

An Pham · 4 likes

This is useful for some cases, but terrible advice if the stakes are high. The a neighborhood park detail changes the whole answer. The follow-through matters more than the perfect plan

Noah Miller · 4 likes

This reminds me of something a friend in Toronto mentioned. My only addition is to make the first step visible

Maya Williams · 1 likes

really good advice, and it feels doable. For me it came down to the route. Small progress still counts

Piotr Zieliński · 2 likes

This is the kind of disagreement I like

Priya Nair · 2 likes

good clarification — I read it differently at first

Ngozi Bello · 1 likes

That is a much better way to say it

Noura Alotaibi · 4 likes

Same here. It took me too long to learn

Minh Nguyen · 1 likes

good clarification — I read it differently at first

Léa Bernard · 1 likes

I like teh idea, but teh setup probly matters a lot. I would write it down before changing anything else. I needed this reminder today

Chloe Davis · 3 likes

That is a much better way to say it

Camila Rocha · 3 likes

I was going to disagree, but your second sentence got me

Minji Kim · 1 likes

Big fan of this approach. This is where I would ask one more question before choosing

Maksym Bondar · 1 likes

The Tuesday test is undefeated

Rohan Mehta · 1 likes

Amazing how much difference one small change can make. It reminds me of a very specific conversation near the train station