Labeling Pipelines in Validation
Validation is a separate phase from delivery. The source states that validation is not delivery practice and that it is the gate.
The Build, Check, Ship Assumption
A common way to think about a project is as a sequence: you build something, you check it, and then you ship it. Under this view, checking is a small step inside shipping. Validation becomes delivery with a few extra tests added on. The work looks similar on the surface, so it is easy to assume that validation and delivery are one activity with one set of goals.
The source pushes against this view directly. It states that the validation phase has its own deliverables and its own cadence, and that the job an FDE does during validation is fundamentally different from the job they do during delivery. This article works through why that distinction matters.
Validation as a Gate
The phrase gate carries the core idea. A gate is a checkpoint that work must pass through before it moves on. Calling validation the gate means its purpose is to decide whether work is ready to proceed, rather than to carry the work forward into use.
Delivery is the activity of getting work into place. Validation is the checkpoint between work that has been built and work that is allowed to be trusted and moved forward. The diagram below shows the position of validation in the flow. Work is built first, it passes through the validation gate, and only then does it move on to delivery.
The diagram shows only the position of the gate. The source does not describe what happens to work that fails the gate, so the diagram does not show a failure branch.
Comparing Validation and Delivery
The source makes two claims that set validation apart as a phase of its own. First, validation has its own deliverables. Second, it has its own cadence, meaning its own rhythm of activity over time. The table below separates what the source states from what it leaves open.
| Aspect | Delivery practice | Validation phase |
|---|---|---|
| Purpose | Getting work into place | Deciding whether work is ready to proceed; acting as the gate |
| Deliverables | Not the subject of this source | Has its own deliverables; the source does not list them |
| Cadence | Not the subject of this source | Has its own cadence; the source does not describe it in detail |
| Nature of the FDE's job | One kind of job | Fundamentally different from the job during delivery |
What the source states about validation compared with delivery practice
The surface similarity between the two phases explains why they are easy to confuse. Both involve work that is being built and checked, so the activities can look alike. The source's point is that the purpose of each phase, and the work done within it, differ.
The Validation Kit
The source names several tools that are now standard in the validation kit. These are evaluation harnesses, eval sets, hillclimbing on metrics, and labeling pipelines. The diagram below groups them under the validation phase so you can see them as parts of one activity.
Reading a Gate Decision
Deciding how to talk about a finished build
A team has finished building a component and wants to say it is ready for use. Using only what the source states, explain which phase the team is currently in and what the team's claim must rest on.
- 1Identify the phase
The component has been built but has not yet been allowed to move forward. That places it at the validation gate, the checkpoint between built work and work that is trusted and moved forward.
- 2Name the purpose of the checkpoint
The gate's purpose is to decide whether the work is ready to proceed. It is not, by itself, the act of carrying the work into use.
- 3Check what the source does not say
The source says validation has its own deliverables and cadence but does not list them. The team therefore cannot point to a specific deliverable named in the source as proof of readiness. It can only say the work has been checked at the gate.
The team is in the validation phase. Its readiness claim depends on passing the gate, and the source does not specify the concrete deliverables that would document that pass.
What the Source Leaves Unspecified
A careful reader separates two kinds of statements in this material. The first kind is what the source states: validation is a separate phase, it is the gate, it has its own deliverables and cadence, and it uses the named kit of tools. The second kind is what the source does not provide: a list of the deliverables, a detailed description of the cadence, the wiring of tools within a run, and the order in which they execute.
When this topic appears again, the source suggests looking for the concrete list of outputs and the schedule it has in mind. Until then, the safe claim is that validation produces its own outputs on its own rhythm. Anything more specific would go beyond this source.
Mistakes When Reading About Validation
Common mistake Treating validation as delivery with extra tests added on
What it looks likeConcluding that the only difference is a few additional checks before shipping.
Why it failsThe source says validation is not delivery practice and that it has its own deliverables, its own cadence, and a different job for the FDE.
Do this insteadDescribe validation as a separate phase whose purpose is the gate decision.
Common mistake Reading the kit diagram as a step-by-step workflow
What it looks likeAssuming evaluation harnesses run first, then eval sets, then hillclimbing, then labeling pipelines because they appear in that order.
Why it failsThe source lists the tools as standard parts of the kit. It does not describe their order, wiring, or how many of each are needed.
Do this insteadTreat the kit as a named inventory and state that the order of operation is not given in the source.
Common mistake Inventing the deliverables or cadence of validation
What it looks likeStating a specific report or weekly review schedule as part of validation.
Why it failsThe source confirms these exist but does not list or describe them.
Do this insteadSay that validation has its own deliverables and cadence, and that the specifics are not given in this source.
Common mistake Assuming a gate is the same thing as the final release step
Practice: Separating Claims from Gaps
A colleague says: Validation is just delivery with a few extra tests, so once we have run the tests, we have finished validation and can ship. Using only the source, write a short response that identifies which parts of this claim the source contradicts and which parts it does not address.
Hints
- Look at the statement that validation is not delivery practice and that it is the gate.
- Check whether the source says anything about the specific tests, or about the deliverables and cadence of validation.
- Separate what the source states from what it leaves unspecified.
Key Takeaways
- Validation is treated as a separate phase from delivery, and the source says it is not delivery practice.
- Validation acts as a gate: a checkpoint whose purpose is to decide whether work is ready to proceed.
- The validation kit includes evaluation harnesses, eval sets, hillclimbing on metrics, and labeling pipelines, presented as an inventory rather than a workflow.
- The source states that validation has its own deliverables and cadence, but it does not list or describe them, so those specifics must be sought in later material.