Lesson 2: Empiricism, Its Three Pillars and Lean Thinking

Why This Level Matters

In Level 1 you saw what the PSM™ I assessment looks like: 80 questions in 60 minutes, 85% needed to pass, $200 an attempt, no course required, and the free Scrum Open practice assessment for preparation. Now you start on the theory that every later topic depends on. Many exam questions describe a situation and ask what is going wrong. Often the answer comes down to one idea from this level: empiricism.

Do now: Keep a copy of the Scrum Guide's "Scrum Theory" section open while you read. It is short, and the exam uses its wording closely.

Step 1: Learn the Two Foundations

The Scrum Guide opens its theory section with this sentence:

"Scrum is founded on empiricism and lean thinking. Empiricism asserts that knowledge comes from experience and making decisions based on what is observed. Lean thinking reduces waste and focuses on the essentials." (Scrum Guide 2020, Ken Schwaber and Jeff Sutherland, CC BY-SA 4.0)

In plain terms:

1. Empiricism: you do not try to predict everything up front. You act, look at the real results, and decide what to do next based on what you saw.
2. Lean thinking: you cut out work, delays and meetings that add no value, and keep the focus on what matters.

Think of it like driving in fog. You cannot plan every turn from home. You drive a short distance, look at the road you can actually see, and correct your steering. Scrum works the same way. The Guide says it "employs an iterative, incremental approach to optimize predictability and to control risk" (Scrum Guide 2020).

Do now: In one sentence each, write down what empiricism and lean thinking mean in your own words.

Step 2: Memorise the Three Pillars in Order

Empiricism rests on three pillars. They form a chain, and each one depends on the one before it.

1. Transparency: the work and the process are visible to the people doing the work and the people receiving it.
2. Inspection: the artifacts and the progress toward agreed goals are checked often and carefully, so that problems are found early.
3. Adaptation: when something has gone outside acceptable limits, the process or the product is adjusted.

The Guide states how they connect:

• "Transparency enables inspection. Inspection without transparency is misleading and wasteful." (Scrum Guide 2020)
• "Inspection enables adaptation." (Scrum Guide 2020)
• "Inspection without adaptation is considered pointless." (Scrum Guide 2020)

Why inspection without transparency misleads: suppose a team's board shows every item as "done", but half of the items still have untested code. Anyone inspecting the board sees a healthy picture that is false. Decisions made from it, such as releasing the product or promising a date to customers, rest on a false picture. The Guide warns that "Artifacts that have low transparency can lead to decisions that diminish value and increase risk" (Scrum Guide 2020).

Do now: Say the chain out loud: transparency, then inspection, then adaptation. The exam often tests the order and the dependency.

Step 3: Diagnose Which Pillar Is Missing

When a scenario describes a team that cannot improve, work out where the chain breaks. Use this checklist:

• Can people see the real state of the work? If work is hidden, reported optimistically, or defined differently by different people, transparency is missing.
• Is anyone actually looking, often enough and carefully? If problems surface only at the end, or reviews are skipped or rushed, inspection is missing.
• Do they change anything after looking? If the team spots problems but nothing changes, adaptation is missing.

A common reason adaptation fails: the people who spot the problem are not allowed to act on it. The Guide says: "Adaptation becomes more difficult when the people involved are not empowered or self-managing." It also expects that "A Scrum Team is expected to adapt the moment it learns anything new through inspection." (Scrum Guide 2020)

Worked example: A team notices in every Sprint Retrospective that builds break, but every process change needs sign-off from a manager outside the team, so nothing changes. They can see the problem (transparency) and they discuss it (inspection). The break is at adaptation, caused by a lack of empowerment.

Do now: For each scenario you meet in practice tests, name the first pillar in the chain that fails.

Step 4: Connect Lean Thinking to the Scrum Events

Scrum has the Sprint, which contains four events: Sprint Planning, Daily Scrum, Sprint Review and Sprint Retrospective. Each one is a formal opportunity to inspect and adapt. Later levels cover each event in detail. For now, notice how they reflect lean thinking:

1. Fewer meetings. "Events are used in Scrum to create regularity and to minimize the need for meetings not defined in Scrum." (Scrum Guide 2020) The events replace ad hoc status meetings; they are not extra meetings added on top.
2. Less coordination waste. "Optimally, all events are held at the same time and place to reduce complexity." (Scrum Guide 2020)
3. Focus on essentials. Each event has a clear purpose and a fixed maximum length (a timebox), so time is spent on the decision at hand and not on drifting discussion.
4. Early detection. Frequent inspection finds problems while they are still cheap to fix, which reduces rework, one of the biggest sources of waste.

Do now: For any team practice, ask: does this make the work more visible, help us inspect it, or help us adapt? If it does none of these, it is a candidate for waste.

What the Exam Asks About This

• Recall: Scrum is founded on empiricism and lean thinking; the three pillars are transparency, inspection, adaptation.
• Dependency: transparency enables inspection; inspection enables adaptation. Inspection without transparency is "misleading and wasteful".
• Scenarios: identify the missing pillar, and recognise that lack of empowerment or self-management makes adaptation harder.
• Purpose of events: they exist for inspection and adaptation and to minimise other meetings, not for status reporting to managers.
• Watch for distractors that say Scrum is "predictive" or that a detailed upfront plan removes the need for inspection.

Key Takeaways

• Scrum is founded on empiricism (decide from what you observe) and lean thinking (reduce waste, focus on essentials).
• The three pillars form a chain: transparency → inspection → adaptation.
• Inspection without transparency is misleading and wasteful; inspection without adaptation is pointless.
• To diagnose a struggling team, find the first broken link in the chain.
• Adaptation suffers when people are not empowered or self-managing.
• The Scrum events are formal inspect-and-adapt opportunities that reduce the need for other meetings.

Quotations marked as the Scrum Guide's are from the Scrum Guide 2020, Ken Schwaber and Jeff Sutherland, licensed CC BY-SA 4.0.