Endurance
Trail ultras, 50K and up.
The long, stupid effort that teaches you to keep moving long after it stops being fun — the same muscle as shipping when the build gets hard.
[Simon fills: longest race · finish time · total vert · weekly volume.]
The other ledger
Off the clock
The same all-in when no one's paying me to be. The proof that the range isn't only professional — it's who I am.
Chess
Regional champion at eleven.
Calculation under a clock, with no one to blame for the position but yourself. I've competed timed ever since — it shows up in every hackathon.
[Simon fills: rating / FIDE · club · a line you'd defend to the end.]
Philosophy
Reading the philosophy, not the summary of it.
Where the first-principles habit comes from. I'd rather argue with the source than the takeaway someone else pulled from it.
[Simon fills: the thinkers you actually read — and the one idea you keep returning to.]
Back to the main ledger.