Feed Failures Back into the Next Iteration

Launching isn't the end. Every human intervention and every pitfall is a chance to feed the knowledge base, making this the last time you intervene.

A lot of vibe coding projects "end" the moment they launch, treating the pits they fell into as things that never happened. The sustainable way is the opposite: turn every failure and every manual step-in after launch into the next round's input—so the product isn't "finished and worn out," but understands your requirements better with use.

After reading, you should be able to answer:

• Why is "launch is the end" a waste?
• What does "human intervention is a gap signal" mean?
• How does feeding failure back actually land in the project?

Launch isn't the end

Launch is just "the start of being used for real"; the real learning begins here:

• How users use it, where they get stuck, where they drop off
• Which places AI guessed wrong and you had to step in
• Which requirements changed, which assumptions were wrong

Not recycling these means starting from zero every time; recycling them means the product evolves every round.

Human intervention is a gap

Every time you have to step in to help AI or fix a problem, it's the exposure of a piece of information it didn't know. Ask yourself "what do I know that it doesn't," then feed that information into the context or the rules:

• It keeps guessing wrong on X → write X's background into the contract/context
• You keep explaining "we don't use Y approach" → ban it in the rules
• It keeps missing a boundary → add a check item

Feed it in, and this intervention can become "the last time."

How feeding failure back lands

• Retro to rule: fix a one-off problem first; when a path repeats, crystallize it into a rule/script
• Write back to the knowledge base: put the lesson into a project learnings file or the contract so it takes effect next round automatically
• Feedback loop: each round's result is the next round's input—let knowledge accrue as a byproduct of real iteration anthropic-sdlc

Don't chase one-shot perfection

• Don't chase "cover all the pits on the first round"; that's a fantasy
• Let it run first, expose problems through real use, and turn the loop round by round
• Fill a gap with every intervention, and as the loop turns, you'll intervene less and less

Feed failures back well, and the product understands you better with use. The last chapter covers the two ledgers that leak quietly — safety and cost. Start with the one you cannot afford to lose: The Security Floor Is Not Negotiable.