What is Bitter Lesson?
Rich Sutton's 2019 essay: general methods that scale with computation ultimately beat methods built on hand-coded human knowledge. For products, it warns that workarounds for today's model limits tend to get thrown away.

more fuel · plain engine ends ahead
The Bitter Lesson argues that, over time…
Write it in your own words in the app.
In real work
Citing the bitter lesson, the PM declined a quarter of hand-written parsing rules and spent it on evals that show the moment a new model parses the forms unaided.
In the illustration
Both engines get more fuel each second. The hand-tuned one, built around a small custom carburetor, leads early and then flattens; the plain one keeps using the extra fuel and its curve crosses above.
Apply the bitter lesson in your model to the roadmap below: mark each item as riding model progress or fighting it, and suggest how to shrink the items that fight it.
Try it now
The fastest way to learn a word is to use it. Open this line in the agent you already work in and watch what it does. Change the tool to the one you use.
Go further
01Practice
Make it stick
One term a day, a short quiz, and sentence practice that checks your own words.
02Verify
Prove you know it
Pass the quiz and keep it in a Skills Wallet you can share with anyone who needs proof.
03Career
Find the work that uses it
See which roles lean on this vocabulary, and what they pay in year one.





