The Most Convenient Size
Everything has a natural scale; forcing beyond it breaks the system
The Most Convenient Size framework, drawn from biologist J.B.S. Haldane writing, states that for every type of system there is a most convenient size, and a change in size inevitably carries with it a change of form. This means there is a proper state where things work well but break when you try to scale them into a different size or speed. The principle applies universally across biology, business, investing, and organizational culture.
In biology, Robert Wadlow grew to nearly nine feet tall but required steel leg braces to stand and a cane to walk. You cannot triple the size of a human and expect triple the performance. A flea can jump two feet, but if scaled to human size, air resistance and energy requirements would limit the proportional increase. Similarly in business, Starbucks opening 3,500 stores per year (a new store every 90 minutes) led to the watering down of their experience and a 73 percent stock crash.
The investing corollary is equally powerful: stocks pay a fortune in the long run but seek punitive damages when you try to be paid sooner. There is a most convenient investing time horizon, probably around ten years, where markets nearly always reward patience. Compressing that natural timeframe forces you to rely on luck and tempt ruin.
- For every type of system there is a most convenient size, and scaling beyond it changes the form.
- Growth is not a strategy. It is a tactic. And when undisciplined growth became a strategy, we lost our way.
- Stocks pay a fortune in the long run but seek punitive damages when you try to be paid sooner.
- Charlie and I always knew we would become incredibly wealthy. We were not in a hurry. Rick was just as smart as us, but he was in a hurry.
- Identify the Natural Scale of Your SystemEvery business, investment strategy, and organizational culture has a natural rate and size at which it functions optimally. Determine what yours is by examining what level of growth you can sustain without degrading quality, culture, or customer experience. Look at your industry history for examples of companies that grew past their natural scale and suffered. The most convenient size is where the customer desire and your ability to deliver intersect without strain.Pro tipHoward Schultz told Adam Neumann to slow down growth and focus on quality metrics. Neumann responded with a profanity and rejected the advice. Some people learn this the hard way.
- Match Your Time Horizon to the Natural CycleIn investing, the most convenient time horizon is probably around ten years, which is the period in which markets nearly always reward patience. In business, the most convenient growth rate is whatever pace allows you to maintain product quality and customer satisfaction. Do not try to compress these natural cycles. No less than 90 percent of investing blunders are caused by investors trying to compress the natural most convenient time horizon. Apply the same principle to career development, skill building, and business growth.Pro tipWhen you feel impatient, ask yourself: am I trying to compress a natural timeline, or is there a genuine reason to move faster?WarningDo not confuse patience with complacency. The goal is to respect natural timelines, not to avoid taking action entirely.
- Resist the Temptation to Force ScaleWhen growth feels too slow, the temptation is to force it through leverage, aggressive hiring, rapid expansion, or M&A. These tactics often produce growth that exceeds what customers think the business deserves. Revenue might scale but disappointed customers scale faster, in the same way Robert Wadlow became a giant but struggled to walk. Growth by acquisition often occurs when management wants faster growth than the natural market allows. Force-feeding beyond the most convenient size leads to all kinds of disappointment.Pro tipBefore any scaling decision, ask: will this move us past our most convenient size? If so, what breaks?
Starbucks had 425 stores in 1994, its 23rd year. By 2007 it was opening 3,500 stores per year, a new store every 90 minutes. Howard Schultz wrote to senior management: In order to go from less than 1,000 stores to 13,000 stores we have had to make a series of decisions that have led to the watering down of the Starbucks experience. The company closed 600 stores in 2008 and laid off 12,000 employees.
Forty years ago, the famous investing duo of Warren Buffett and Charlie Munger had a third member, Rick Guerin. The three made investments together. Rick was just as smart as Warren and Charlie, but he was in a hurry and used heavy leverage. When the 1970s bear market hit, Rick was wiped out by margin calls while Buffett and Munger survived and went on to become the most famous investors of all time.
Robert Wadlow grew to nearly nine feet tall due to a pituitary gland abnormality. Rather than becoming a superhuman athlete as fiction would suggest, he required steel leg braces to stand and a cane to walk. He had little feeling below his knees, and what killed him was a blood pressure-related ulcer caused by his heart strain to pump throughout his enormous body. His movements were strained and awkward in every video that exists.
Morgan Housel developed this framework in a 2021 essay for Collaborative Fund, building on biologist J.B.S. Haldane classic essay about scaling in nature. Haldane showed how a flea scaled to human size would barely improve its jump, and how a wet fly faces a life-threatening situation while a wet human merely feels uncomfortable. Housel connected these biological scaling limits to the story of Robert Wadlow, the tallest human ever recorded at nearly nine feet, who required leg braces and ultimately died from complications of his extreme size. Housel then extended the principle to Starbucks (which Howard Schultz admitted had watered down its experience through undisciplined growth), to Rick Guerin (the forgotten third member of the Buffett-Munger partnership who was wiped out by leverage in the 1970s), and to the universal investing principle that trying to compress natural timeframes destroys returns.