Features, Requirements, and Assumptions

Start with the Consequence

A founder is turning an idea into a brief that a consultant can estimate and build.

The immediate question is features, requirements, and assumptions. The technical label matters only because it changes a product decision, a responsibility, or the evidence required before launch.

Technical term

A feature is a product capability, a requirement states a condition it must satisfy, and an assumption is an unproven belief behind the plan.

Treat it like a clause in a commercial agreement: its value comes from making expectations and consequences clear, not from sounding formal.

Turn the Term into Evidence

Start with the product consequence, then choose the simplest technical treatment that protects it. A longer tool list is not a stronger plan.

For this decision, the useful standard is that a real user can complete the intended outcome and the result tests the stated assumption.

Make the decision explicit: Label each statement correctly so the team knows what to build, what to verify, and what remains uncertain.
Ask what evidence would show that the chosen approach works.
Name the person or provider responsible when the approach fails.
Record the result in the MVP brief and acceptance criteria.

Knowledge Check

Which approach best applies features, requirements, and assumptions to a founder's product decision?

A feature is a product capability, a requirement states a condition it must satisfy, and an assumption is an unproven belief behind the plan. Label each statement correctly so the team knows what to build, what to verify, and what remains uncertain.Choose the most sophisticated option and document it later.Treat the interface demonstration as proof that the underlying system is ready.Delegate the decision completely because it contains technical terms.

Match the Control to the Consequence

Label each statement correctly so the team knows what to build, what to verify, and what remains uncertain.

The principal risk is that unproven assumptions are treated as fixed requirements and consume the budget. This does not require the most expensive possible solution. It requires the consequence to be understood and the control to match it.

Describe the user or business outcome that must be protected.
Identify the most credible failure and its consequence.
Compare the simplest adequate approach with one realistic alternative.
Set a review point for when the decision may need to change.

Evidence Compared with Assumption

Proportionate Approach

The choice is tied to a known outcome, risk, owner, and review point.

States what is included and excluded
Produces evidence another person can review
Leaves the company able to change provider or approach

Weak Reassurance

The choice relies on a tool name, successful demo, or untested assumption.

Uses technical vocabulary without consequences
Tests only the easiest path
Leaves ownership or recovery unclear

Exercise

Choose the Useful Consultant Question

A consultant says that features, requirements, and assumptions is covered. Which follow-up gives the founder the most useful evidence?

Can you show how the approach supports this decision: Label each statement correctly so the team knows what to build, what to verify, and what remains uncertain.Is this the tool you normally use?Can we make the interface look more technical?Can we avoid documenting the choice until after launch?

Knowledge Check

Which risk deserves the most attention when reviewing features, requirements, and assumptions?

unproven assumptions are treated as fixed requirements and consume the budget.The product uses fewer visual effects than a competitor.The team has not selected a final logo treatment.The first implementation takes more than one working session.

Warning Signs

Nobody can explain how features, requirements, and assumptions changes a user or business outcome.
The proposal does not address this risk: unproven assumptions are treated as fixed requirements and consume the budget.
The only evidence is a successful demonstration of the easiest path.
The decision has no named owner, boundary, or review point.
A provider-specific feature is being mistaken for a permanent product requirement.

Questions to Ask a Consultant

What decision are we making about features, requirements, and assumptions?
Which user or business outcome does the recommendation protect?
How have we reduced or accepted this risk: unproven assumptions are treated as fixed requirements and consume the budget.
What evidence can I review without relying on the original implementer?
What is deliberately deferred, and when will it be reconsidered?
Who owns the accounts, data, documentation, and recovery process?

Exercise

Founder Decision Note

Record the decision, its current constraint, recommended option, main reason, primary risk, and the condition that would make you revisit it.

DecisionCurrent constraintRecommended optionMain reasonPrimary riskWhat would make us revisit this

Key takeaway

A feature is a product capability, a requirement states a condition it must satisfy, and an assumption is an unproven belief behind the plan. The founder's job is to make the consequence explicit; the consultant's job is to recommend and demonstrate a proportionate implementation.

Start with the Consequence

A founder is turning an idea into a brief that a consultant can estimate and build.

The immediate question is features, requirements, and assumptions. The technical label matters only because it changes a product decision, a responsibility, or the evidence required before launch.

Technical term