Vol. I · No. 2 · October 2026·D4S diagnostic · free

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Embedded diagnostic · 3 minutes · no signup required

Run a decision through the four filters.

D4S is the framework I use inside every engagement. Differentiation, Dollars, Delight, Defense. If a decision doesn't meaningfully hit at least one, the default is Skip. Try it free on a real decision you're weighing.

No email required to use it. If you want to discuss the result afterwards, that's when.

One sentence. As concrete as possible.

Stage + team size + industry. One line.

So the Dollars filter has signal. Not stored.

The most important question. Without it, every project looks urgent.

Call uses Claude (Anthropic). We don't store inputs or outputs. Takes ~10 seconds.

If the verdict doesn't fully land, take it to sparring.

What you have above is AI-generated D4S: structure, not context. If the decision has real stakes — €10K+ in time or money — and you want eight years of pattern-matching applied to your case, real math on your burn, and a one-page memo to defend the decision, that's sparring. 90 minutes, founder rate €150 for the first 5 clients.

See sparring →

Four filters, a Skip default.

D4S isn't a productivity framework or a certifiable methodology. It's a decision filter. I use it inside every Boring Room and every facilitation program. Here it's exposed without hiring me.

Read the full framework article →

Diagnostic is AI-assisted. Doesn't replace operating judgment, technical due diligence, or legal/financial advice. For board-level decisions, bring it to a discovery call.