Useful By Design

I turn messy product, AI, and engineering problems into clear tools, sharper systems, and work people can actually use.

Christian Katzmann [ Product clarity ][ AI systems ][ Guidance ][ Interface taste ]

A calmer way to turn ambiguity into shipped work.

Product clarity

Find the real user pressure, cut the noise, and make the next move obvious.

AI systems

Shape agents, workflows, eval loops, and automation into reliable product surfaces.

Interface taste

Design quiet tools that feel dense, calm, and fast enough for repeated use.

Start with the problem, not the pitch.

The shortest path is still the most useful one: map the system, find the leverage point, then ship the smallest thing that changes reality.

Start a conversation
Katzmann terminal

[01] $ map the system

constraints found - incentives named

[02] $ prototype the leverage point

rough interface - useful behavior

[03] $ ship the boring version

fewer moving parts - clearer ownership

[04] $ tighten from reality

feedback folded in - judgment sharpened
Useful By Design Useful work stays clear

A calmer way to turn ambiguity into shipped work.

Product clarity

Find the real user pressure, cut the noise, and make the next move obvious.

AI systems

Shape agents, workflows, eval loops, and automation into reliable product surfaces.

Interface taste

Design quiet tools that feel dense, calm, and fast enough for repeated use.

Start with the problem, not the pitch.

Map the system, find the leverage point, then ship the smallest useful thing.

Terminal

$> map the system

$> ship the boring version