What is Choosing By Advantages?

Lean Leadership: What It Is, Why It Matters, and How CBA Fixes Construction Decision-Making

Construction professionals make approximately 35,000 decisions per day. How many of those are made intentionally, with a sound method, involving the right stakeholders, anchored to relevant facts? For most teams, the answer is: almost none. The rest are made by gut reaction, historical habit, the loudest voice in the room, or the person with the most organizational authority. And a small number are made through formal methods weighting and rating, pros and cons, advantages versus disadvantages that feel systematic but contain structural flaws that make their outputs unreliable.

Choosing by Advantages is a decision-making system developed by Jim Suhr a civil engineer with graduate studies in engineering, economics, ecology, and organizational behavior, who spent time as a farmer, school teacher, and US Forest Service employee before discovering CBA through his work there. Suhr is careful to describe himself as a discoverer rather than an inventor: the principles of sound decision-making exist whether or not anyone has named them, and CBA is his systematic articulation of what those principles require.

The Four Cornerstone Principles

CBA is built on four foundational principles that together define what sound decision-making actually requires. The Pivotal Principle establishes that decision-makers must learn and skillfully use sound methods. This is the baseline: intuition, hierarchy, and habit are not methods. They are defaults that produce outcomes based on factors that have nothing to do with the merits of the options being considered. Sound decision-making requires a deliberate method, and applying that method requires learning it.

The Fundamental Rule of Sound Decision-Making establishes that decisions must be based on the importance of advantages. Not on preferences, not on weighted factor scores, not on a balance of pros and cons on advantages, which are differences between the attributes of alternatives, weighted by their importance to the decision-makers in the specific context of this decision.

The Anchoring Principle establishes that decisions must be anchored to relevant facts. The facts are the actual attributes of each alternative the specific numbers, ratings, and descriptions that characterize each option. Decisions that drift away from those facts and into generalizations, impressions, and assumptions are not sound.

The Methods Principle establishes that different types of decisions call for different sound methods. Not every decision requires the full Tabular Method. Simple decisions can be made with simpler methods. Complex decisions require more structured approaches. The system includes methods for virtually all types of decisions, from the simplest to the most complex, and the skill of applying the system includes recognizing which method the decision requires.

The Language That Makes CBA Precise

CBA uses standard language consistently throughout. The precision of that language is not pedantry it is what makes the system’s outputs unambiguous and reproducible. An alternative is a person, thing, or plan from which one is to be chosen. An attribute is a characteristic or consequence of one alternative the key word is one, meaning that attributes belong to specific options rather than existing in the abstract. A factor is an element of the decision that contains data relevant to making it. A criterion is the standard, rule, or test on which a judgment is based the rule that determines which direction is preferable for a given factor. And an advantage is a benefit or improvement specifically, the difference between the attributes of two alternatives, with the key being that two alternatives are being compared.

The simple example clarifies these terms precisely. Driving to the dentist via the highway covers 16 miles in 19 minutes. Driving through the suburbs covers 9.9 miles in 26 minutes. The criterion is getting there as quickly as possible, which means only the time factor is relevant the mileage factor does not matter given this criterion. The advantage is that the highway route is 7 minutes shorter. Therefore, the highway is chosen. Now the same information updates: there is traffic on the highway, and the highway now takes 30 minutes. The advantage shifts: the suburbs route is 4 minutes faster. The decision reverses. The method accommodates new information cleanly, without rebuilding the analysis from scratch.

What Is Wrong With the Methods Currently in Use

The informal methods through which most construction decisions actually get made are recognizable and deeply embedded. Historical decisions we do what worked last time, or we avoid what did not ignore whether the context is the same as it was. Conversational decisions whoever is loudest or highest-ranking decides substitute authority for analysis. Siloed decisions made by well-intentioned individuals who think they are saving others time exclude the perspectives that would have improved the outcome.

The formal methods that construction teams use when they do try to be systematic contain structural flaws that make their outputs unreliable. Weighting factors is unsound because factors cannot be weighted independently of the differences they describe. The factor of time cannot be assigned a weight of thirty percent without knowing whether the time difference between alternatives is seven minutes or three hours. The weight only makes sense in relation to the actual difference which means the weighting should be applied to advantages, not to factors.

Double-counting is the central flaw in pros-and-cons and advantages-versus-disadvantages analysis. If one route is seven minutes shorter, it is automatically seven minutes longer for the alternative. Counting both the seven-minute advantage and the seven-minute disadvantage treats the same difference as a fourteen-minute gap. The analysis has inflated the apparent magnitude of the difference by a factor of two.

Negativity bias compounds the double-counting problem. Human psychology consistently assigns more weight to disadvantages than to equivalent advantages. A seven-minute disadvantage registers as more significant than a seven-minute advantage which means that analyses built on both positives and negatives are systematically biased toward the least-bad option rather than the best option.

Here are the characteristics of a sound decision as CBA defines it:

• Based on facts and data rather than generalizations or impressions
• Inclusive of both subjective and objective information, properly labeled as such
• Governed by criteria based on the end users’ actual needs and wants
• Developed with stakeholder alignment on the criteria before the attributes are evaluated
• Produced through a process that involves the right stakeholders and generates genuine buy-in
• The best decision possible given the information available at the time

Why This Matters for Construction

The decisions that construction projects make during design and preconstruction shape every subsequent phase of the project. Structural system selection, trade partner choice, equipment procurement, design option evaluation each of these decisions carries forward implications that are very expensive to reverse once construction is underway. Poor decision-making at these junctures produces the late changes, negative iterations, and change orders that are among the most significant sources of construction waste.

CBA produces decisions that are collaborative the criteria and advantages are developed with the team, not handed down by a single decision-maker. It produces decisions that are transparent the rationale is documented in a form that any stakeholder can read and understand. It produces decisions that are updatable when new information arrives or new stakeholders join the project, the analysis can be revised without rebuilding from scratch. And it produces decisions that are defensible when an owner questions why a particular structural system was selected, the team can show exactly what advantages were considered, how they were weighted relative to each other, and how cost was evaluated against those advantages.

The cause-and-effect model at the heart of CBA applies directly to construction improvement. Better methods produce better decisions. Better decisions produce better actions. Better actions produce better outcomes. The path from the industry’s chronic overruns and rework to genuinely better project performance runs through decision quality, and decision quality runs through method.

If your project needs superintendent coaching, project support, or leadership development, Elevate Construction can help your field teams stabilize, schedule, and flow. Make sound decisions. Use a sound method. Anchor to facts. Count advantages once.

On we go.

Frequently Asked Questions

What are the four cornerstone principles of Choosing by Advantages? 

The Pivotal Principle decision-makers must use sound methods. The Fundamental Rule decisions must be based on the importance of advantages. The Anchoring Principle decisions must be anchored to relevant facts. The Methods Principle different types of decisions call for different sound methods.

Why is weighting factors an unsound decision-making practice? 

Because the weight of a factor can only be determined in relation to the actual differences it reveals between alternatives. A time factor weighted at thirty percent means something completely different when the time difference is seven minutes versus three hours. Weights must be applied to advantages specific differences in specific contexts not to abstract factors.

What makes pros-and-cons analysis structurally flawed? 

Two problems: double-counting and negativity bias. Double-counting treats a seven-minute difference as a fourteen-minute gap by counting it as a positive for one alternative and a negative for the other. Negativity bias causes decision-makers to weight disadvantages more heavily than equivalent advantages, systematically biasing the analysis against the best option.

How does CBA handle new information after a decision has been documented? 

The structured tabular format makes it straightforward to update the analysis when attributes change, new factors emerge, or new alternatives are added. The documented rationale shows exactly where the decision rested, which makes it clear what needs to change when the inputs change.

Why is it important that criteria be established before attributes are evaluated? 

Because establishing criteria after seeing the attributes allows the criteria to be shaped consciously or not by which alternative is already preferred. Setting criteria first ensures that the evaluative standards are genuinely based on the end users’ needs rather than reverse-engineered to justify a predetermined conclusion.