Proof of Concept

February 2026

Sketching with code

Issue 286: Treating code like a pencil, not a blueprint

Feb 22 • David Hoang

25

1

3

The supply side of AI

Issue 285: What you sell in a marketplace changes with every platform shift

Feb 15 • David Hoang

9

2

Surfaces, capabilities, and extensions

Issue 284: Future casting opinionated platforms

Feb 8 • David Hoang

13

3

How Product Discovery changes with AI

Issue 283: Understanding the new uncertainty to de-risk

Feb 1 • David Hoang

62

5

15

January 2026

From LECHTTURM 1917 to Markdown: a workflow for personal AI context

Issue 282: How I took 10 years of notebooks and used Claude Code build my knowledge

Jan 25 • David Hoang

17

5

1

The alumni mindset

Issue 281: The long game of team building

Jan 18 • David Hoang

13

1

Terminal velocity

Issue 280: Claude Code and the CLI comeback

Jan 11 • David Hoang

15

2

1

My 2026 focus areas

Issue 279: Where I’m placing my attention this year

Jan 4 • David Hoang

66

2

4

December 2025

Proof of Concept in 2025

Issue 278: Reflecting on themes and issues from the year

Dec 28, 2025 • David Hoang

16

2

4

Natural light week

Issue 277: Embracing winter and seasonality

Dec 21, 2025 • David Hoang

14

1

The plan is the program

Issue 276: Knowledge engineering and plans as an atomic unit

Dec 14, 2025 • David Hoang

18

2

4