How to Engineer for Uncertainty—A Seven-Step Guide for Resilient Systems

Strategic engineering is an emerging discipline that asks a deceptively simple question: how do we design, create and manage large-scale technological systems in a world that keeps changing? Unlike traditional engineering — and even systems engineering — strategic engineering focuses as much on when and in what order decisions are taken as on the decisions themselves. Very much like an expert player at chess, go or shogi, strategic engineers think several moves ahead, so choices they make today keep tomorrow’s options open. 

Table of Contents

Embracing Uncertainty

Standard project plans often begin by trying to “get the forecast right,” then optimising a design around that single future. Strategic engineering starts by admitting that the future is not merely an extrapolation of the past and that averages may mislead — the infamous “Flaw of Averages”.  

Case in point — Iridium (1990-1999). In the 1990s, Motorola invested US$5 billion to build Iridium, a 66-satellite constellation offering space-based cell-phone communication, assuming global executives would pay $3 a minute to make phone calls from anywhere around the world. By the time the system was fully launched, terrestrial GSM networks had already blanketed most business hubs, and the size of handsets had shrunk dramatically. Iridium filed for Chapter 11 just nine months after service began — an object lesson in betting everything on a single forecast rather than structuring decisions to keep multiple possible futures open

Navigating Complex Socio-Technical Systems

Major programmes rarely fail for purely technical reasons. They are embedded in a highly complex socio-technical environment of regulations, politics and organisational culture. The “silo problem” — brilliant specialists who rarely speak to one another — is the enemy of strategic outcomes. 

Case in point — Chicago’s Skyscraper Boom (1890s-1970s). Chicago’s soil, fire code, political patronage and engineering guilds co-evolved. Continuous dialogue among architects, structural engineers and the city council created a feedback loop: each new tower changed with regulations, technologies and public taste, making the next one possible. The latest example is the Blue Cross Blue Shield Tower. Built in 1997 as a 33-story building, it was designed to accommodate 24 additional stories – vertically. Extension began in 2007 and was completed in 2010. In the long run, the social “glue” of professionals, engineers and municipal planning committees can be as important and durable as steel framing. 

Designing for Change over Time

Because technologies, markets and policies evolve, a strategic plan must be dynamic, evaluated period-by-period, with economic metrics that capture the time value of money and the value of flexibility. Discounted-cash-flow analyses, once relegated to accountants, move centre-stage. 

Case in point — Ponte 25 de Abril in Lisbon (1960-Present). Inaugurated in 1966, the bridge was originally designed with two 2-way traffic lanes on the upper platform, including the possibility to add a railway underneath. Expansion work began in the 1990s, leading to today’s infrastructure providing three 2-way lanes for vehicles, and a double track railway enhancing transport capability over the Tagus river.  

Exploring the Space of Possibilities

Relying on a best-guess forecast or a few scenarios (optimistic, expected, pessimistic) in “after-the-fact” sensitivity analysis cannot cope with the combinatorial explosion of possible architectures, scenarios and stakeholder decisions that may exist. Strategic engineering turns to simulation ensembles that output probability distributions instead of point estimates, thereby shifting the focus from optimizing the system for the best forecast to finding architectures that shift distributions of possible outcomes towards better overall value.

Case in point — Monte Carlo Design of Uranium-Fuelled Research Reactors. Designers of water-cooled test reactors used thousands of stochastic runs to map criticality, thermal-hydraulics and licensing scenarios instead of a single “nominal” load line. The output was a probability cloud of power-to-flow ratios, revealing design points that sharply reduced the tail-risk of void-induced reactivity spikes while leaving peak power untouched.  

Valuing Adaptation and Flexibility

A flexible design is not wasted capacity; it provides an option to make a valuable decision in the future, whose value can significantly exceed its upfront cost. Quantifying the economic value of such real options requires looking at the whole distribution of futures – not just today’s most likely path.  

Case in point — A Flexible Parking Garage near the Bluewater Shopping Center. A parking garage was developed to accommodate growing demand from shoppers in a new commercial center in the UK. The original design included reinforced concrete structures and pillars to accommodate capacity expansion in the future. This strategy limited risk exposure by requiring a smaller capital outlay, and also positioned the owner to capture more profits if demand turned out higher than expected. The strategy provided the real option to expand capacity when needed, depending on uncertain demand realizations. A study demonstrated that this strategy can increase the economic value by 20-30% compared to a fixed capacity design – significant for infrastructures often requiring $10-100 million investments (or more!)  

Case in point — The China’s Pilot an offshore Wind Power Project off the Coast of Guangdong. (2021) The project prioritized extreme survivability—designing for rare 50-year typhoons—which led to a rigid, overbuilt platform. Despite being technically sound, it lacked strategic flexibility. With an LCOE exceeding €300/MWh—twice the European benchmark—it proved costly and fragile. Worse yet, robustness did not translate into reliability. Internal flooding and typhoon damage forced repeated shutdowns. By locking in design choices early and ignoring modularity or staged development, the project amplified both technical and financial risks—turning a showcase effort into a cautionary tale.

Balancing Stakeholder Risk–Reward Profiles

Different actors—investors, regulators, communities—value outcomes differently. Strategic engineering therefore frames design choice as a multi-objective search, not an optimisation for a single “best” answer. 

Case in point — HS2 (UK High-Speed Rail, 2010-2023). Investors chased revenue, local councils wanted regeneration, environmental groups pushed for lower embodied carbon, and Treasury hunted cost savings. Multi-objective optimisation produced Pareto sets trading journeys-per-day, carbon intensity and net present cost. Lack of an agreed frontier—and shifting political weights—ultimately led to partial cancellation, underscoring why transparent risk-reward mapping is indispensable. 

From Strategy to Execution: Building the Game Plan

Finally, even the most robust architecture fails if the path to realisation—the game plan—is not itself resilient. Implementation plans must survive leadership changes, regulatory twists and funding cycles. 

Case in point — FAA NextGen + Crossrail. 

  • NextGen (2007-ongoing). The U.S. air-traffic overhaul was sliced into rolling five-year capability drops; each drop is valuable on its own (e.g., time-based flow management at Charlotte 2024) yet nests into a longer digital-ATC vision. 
  • Crossrail / Elizabeth Line (2008-2022). “Hold-points” enabled tunnel-boring methods, station layouts and financing terms to be re-baselined without stopping the programme, buffering the 2008 crash and COVID delays. 

Conclusion

Strategic engineering reframes engineering from a one-off design exercise into a continuing strategic conversation with uncertainty, society and time itself. It: 

  1. Acknowledges uncertainty and rejects single-line forecasts. 
  2. Integrates socio-technical realities into technical design. 
  3. Plans dynamically, valuing information and delaying irreversible moves when prudent. 
  4. Explores possibility spaces through large-scale simulation.
  5. Quantifies flexibility as a financial asset. 
  6. Balances stakeholder objectives instead of seeking a mythical optimum. 
  7. Builds executable pathways that can twist and turn without breaking. 

By weaving these threads together—and by learning from cautionary tales such as Iridium and success stories like Chicago’s skyscrapers—organisations can craft systems that thrive amid uncertainty rather than merely survive it. 

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