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Build. Lead. + Teach.
I'm Luke — a technical product, program, and portfolio manager who never quit being an engineer. I write the roadmaps, read the PRs, write the evals, and ship. Fortune 500s to startups, and everything between. Many courses, one journal, and a working philosophy: an attitude of gratitude.
From the journal
view all →craft · Jun 12
Kill by message, not by ownership — and a node is a state
“Which OS process happens to own a node should have nothing to do with who's allowed to operate on it. A kill is a message, not a syscall.”
craft · Jun 09
The relay is a postbox, not a peer
“The relay is an untrusted postbox: you trust it to forward, not to read or vouch. The keys do the vouching, point to point, direct or relayed alike.”
projects · Jun 06
Auditing the 95%: A Data-Driven Look at Amazon Sidewalk Before I Bet a SKU on It
“95% of the population doesn't mean 95% of where the dog goes. Coverage maps are static. Dogs are not.”
Now teaching
all courses →The Gratitude Index
One small thank-you, every day.
Jun 11 · #trailblazers
Benjamin Franklin flew a silk kite into a Philadelphia thunderstorm today in 1752 — cedar cross-sticks, a sharp wire at the peak, hemp string running up to it, an iron key knotted where the line dropped to a dry silk ribbon he held inside a shed doorway. A knuckle to the key drew a spark. Proof that lightning was electricity, built from a kitchen drawer.
Jun 09 · #readers
A reader followed the city-walk post, bought a Meshtastic tracker, and emailed from a parking lot with his first packet logs.
Jun 08 · #everyday
A dream good enough that you wake up holding still — eyes shut, breath shallow — like the room might shake it loose if you moved. The plot's gone by breakfast. The feeling stays all day.
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