Blog - Paul Welty, PhD

10 July 2026 · technology

Memory is (almost) solved. time is next.

AI can’t tell if a memory is two minutes or two weeks old. The fix isn’t making models feel time — it’s cache invalidation: an as-of stamp on every fact, a clock in the context, and a freshness window for anything volatile.

ai-memory temporal-grounding cache-invalidation information-architecture decision-making

6 July 2026 · leadership · organizational-change

Did the state change? A simple test for whether work actually happened

Either something exists now that did not exist before, or it does not. A simple test for whether work actually happened, and what changes when you build your systems so they can’t record anything else.

accountability execution state-change deliverables ai-implementation

20 June 2026 · Paul Welty · resources

How to manage content for multiple clients without flattening their voices

How to manage content for multiple clients without their voices blurring into one house style: a workspace and a voice profile per client, batchable stages, and approval buffers.

authexis content workflow consultants agency brand voice

20 June 2026 · Paul Welty · resources

Why does AI writing sound generic? It has nothing to work with

Why does AI writing sound generic? Because the model has none of your perspective, examples, constraints, or stakes to work with. The fix is interview-first, not better adjectives.

authexis ai writing voice content workflow thought leadership

20 June 2026 · Paul Welty · resources

How to train AI to write in your voice, not your vibe

How to train AI to write in your voice isn’t a prompt trick. It’s a system: writing samples, interview answers, keep/avoid lists, revision loops, and approval gates.

authexis voice ai writing brand voice thought leadership

18 June 2026 · Paul · work · culture

Nobody takes you aside anymore

Print taught a generation of designers when to stop. The constraints that did the teaching are gone, and nobody has priced what they were worth.

constraints discipline craft ai formation

16 June 2026 · technology

How I made Tailscale and NordVPN coexist: the Linux exit node pattern

A practical pattern for running Tailscale and NordVPN together, plus the larger question it exposed: private networks need explicit exit profiles, not one vague VPN toggle.

tailscale nordvpn vpn networking self-hosting

12 June 2026 · Paul · publishing · technology

The 2 a.m. press check

Twenty-five years ago I stood under color-true lamps at 2 a.m., loupe in hand, waiting on the 50th spread. This month an open-source compiler handed me the thing Pantone only ever promised.

typst print typography book-production open-source

28 May 2026 · Paul Welty · ai · work

How do I get my dev team to adopt AI?

A stub on helping mixed-interest development teams find their own useful ways into AI.

ai-adoption development-teams software-development leadership

27 May 2026 · ai · development · consulting

Want to learn about agents? Talk to someone who ran an agency.

I spent 20 years running consulting engagements at Fortune 500 companies. Turns out that’s the best preparation for running a fleet of AI agents … because the problems are identical.

ai agents architecture consulting