RoobLiEssays
Long pieces with sources, often with live figures and a Chinese version.
Certificate pinning narrows an app from trusting every CA on the device to trusting keys it names in advance. Nine certificates against an iOS 26.5 simulator show what each kind of pin stops and what it breaks; the rest is why the web gave pinning up, and how to rotate pins without locking out your own users.
What it would take for one coding agent to hand work to another, from three tools I built and from the personal agents that got their own addresses this year: who a name points to, the chain of states hidden behind sent, authority that only narrows, and results you can check.
In October 2026, eight intermediate CA keys trusted by every major platform turned out to be numbers below 256. How certificates, key ceremonies and ECDSA fit together, worked by hand on a 19-point curve; how the weak keys got in; how the web shut them out; and the check that would have stopped it.
A reminder I set for myself, an essay scolding the young for their philosophy habit, and a message calling someone a “desperate illiterate.” I looked at the three of them together for a long time and came away without a conclusion.
Not ‘America loves Todoist.’ English-speaking professional strata, expensive labor, and ARR capital built a symptom market: micro-control for sale, responsibility sunk onto the self.
Rubber-band bounce, continuous corners, and one-handed MacBook open are not taste. They are damping ratios, G2 curvature, and rigid-body torque inequalities you can model.
From Emacs prefixes and vi modes to Spotlight, command palettes, and Cmd+K: why power users treat keybindings as a namespace, and how KeyCombiner turns that into a practice system.
What “no GPU required” actually covers, what each of the four browser labs deliberately cuts, and when you still need a real card and Nsight.
8 items under this folder.