The leaders of small hunter-gatherer tribes 20,000 years ago faced many of the same challenges as business owners today. They managed groups of perhaps 20 to 50 individuals, allocating limited resources toward one primary objective: keeping everyone fed.

Their operations were relatively simple. Send members of the tribe to find food, bring back more than they consumed, and repeat.

Stockpiling large amounts of food wasn't practical. Tribes moved frequently, food spoiled, and reserves attracted animals or rival groups.

Assume a typical tribe would have enough food to last ten days.

Half the tribe leaves to hunt, taking provisions for the journey. Meanwhile, the remaining members live off the group's dwindling reserves.

Five days later, the hunters return empty-handed. Disappointing for sure, but not catastrophic. The tribe can ration its remaining food and try again.

Now imagine the hunters return after fifteen days with enough food to feed the tribe for weeks.

Unfortunately, the tribe ran out of food five days earlier.

The hunt was successful, but the tribe couldn't survive long enough to benefit from it.

Sound familiar?

Your business might be profitable, bringing back more than it consumes, but timing matters just as much today. If you don't have the cash to make payroll, purchase materials, or pay your bills, your business can't survive.

Sometimes, the more successful your business becomes, the worse the problem gets.

So how did our ancestors approach this challenge, and what can they teach us about running a business today?

Finance has a rather uninspiring name for this problem. We call it the cash conversion cycle (CCC).

It’s basically the time between paying for the resources needed to deliver a product or service and collecting payment from the customer.

Imagine a furniture manufacturer that purchases $10,000 in materials. It takes 30 days to manufacture the furniture, 15 days to sell it, and another 30 days to collect payment.

Assuming the materials were paid for upfront, that's 75 days between spending the money and getting it back.

Meanwhile, the business must continue paying employees, purchasing materials, and covering other expenses.

Now imagine the supplier agrees to give the manufacturer 45 days to pay for the materials.

The operating process hasn't changed, but the cash conversion cycle has fallen from 75 days to 30.

Some businesses take this even further.

Apple, for example, operates with a negative cash conversion cycle. It collects cash from customers quickly, manages inventory efficiently, and benefits from favorable supplier payment terms. In effect, suppliers help finance its operations.

Not every business can accomplish this. Construction contractors, manufacturers, and other businesses often must commit substantial resources long before customers pay.

But nearly every business has opportunities to improve its cash conversion cycle.

And the solutions aren't all that different from those available to our prehistoric ancestors.

The simplest solution for our tribe would have been to accumulate more food.

But how much?

Three days of reserves might be dangerously inadequate. Thirty days provides more security but introduces spoilage, storage costs, and the risk of theft.

Modern businesses face the same tradeoff with cash and inventory.

Too little cash leaves you vulnerable to unexpected expenses or delayed payments. Too much cash sitting idle creates opportunity costs and exposes purchasing power to inflation.

Similarly, excess inventory ties up cash and creates storage and obsolescence risks, while too little can lead to lost sales and production delays.

The objective isn't to maximize reserves. It's to maintain enough to withstand reasonable disruptions without unnecessarily tying up resources.

Try This: How many months of operating expenses could your business cover with its current cash reserves? Divide your available cash by your average monthly essential expenses. As a starting point, consider whether three to six months is appropriate for your business. Then evaluate whether the risks you face justify holding more or less.

Better tools, more effective strategies, and knowledge of animal behavior could help prehistoric hunters return faster and more reliably.

Modern businesses can improve their operations in similar ways.

Reducing production times, managing inventory more efficiently, and negotiating better payment terms all shorten the time cash is tied up.

Sometimes the improvements are surprisingly simple.

I worked with a client whose invoicing process unnecessarily delayed collections. Fixing the workflow shortened the time between completing work and receiving payment without changing pricing, customer terms, or sales volume.

Consider a business with $3 million in annual sales. Reducing customer collection times by just ten days could free up approximately $82,000 in cash.

Improving cash flow often has less to do with finance than with fixing operational inefficiencies.

Try This: Review your last five customer payments. How many days passed between completing the work and receiving the cash? Identify one unnecessary delay you could eliminate.

Prehistoric tribes could also trade with neighboring groups to obtain food or other resources they lacked.

Modern businesses have financing.

A working capital line of credit, for example, can bridge the gap between paying suppliers and collecting from customers.

But don't confuse working capital financing with growth financing.

Working capital financing supports the existing operating cycle. Growth financing funds expansion, such as new locations, equipment, or product development.

These require different financing structures because the timing of repayment is different.

And banks aren't the only option.

Negotiating longer payment terms with suppliers or collecting deposits from customers effectively shifts some of the financing burden to others.

Someone has to finance the time between spending money and getting it back. The question is who.

Try This: Compare your average customer payment terms with your supplier terms. Are you paying for goods and services long before your customers pay you? Could you shift some of that financing burden through better terms or deposits

Eventually, humans developed a more fundamental solution.

Rather than relying exclusively on hunting and gathering, some societies began domesticating animals and cultivating crops.

Agriculture didn't eliminate risk. It introduced new challenges, including seasonal harvests, crop failures, and the need to store food.

But it fundamentally changed how humans produced their resources.

Instead of continually searching for food, they could increasingly control its production.

Modern businesses can make similarly fundamental changes.

Dell pioneered a build-to-order approach to selling computers, reducing the need to manufacture and stock products before securing customers.

Service businesses can replace some unpredictable project revenue with recurring contracts billed in advance.

Construction contractors can negotiate deposits and progress payments rather than financing entire projects themselves.

These changes go beyond improving payment terms or shortening production times.

They change the underlying business model and who finances it.

Sometimes the best solution isn't getting better at hunting. It's finding a way to stop hunting altogether.

Try This: Pick one offering and ask: Could we get paid before doing the work? What would have to change about how we sell, price, or deliver it?

Twenty thousand years of progress haven't eliminated the fundamental challenge of allocating resources today to produce more resources tomorrow.

And every solution involves tradeoffs.

Larger cash reserves improve resilience but reduce capital available for investment. Lower inventory levels free up cash but increase exposure to supply disruptions. Just-in-time inventory systems illustrate how maximizing efficiency can introduce new vulnerabilities.

Financing provides flexibility but adds costs and obligations. Even business-model innovations like subscriptions or customer prepayments introduce new constraints.

There's no universally optimal cash conversion cycle.

The objective is to understand where your cash goes, how long it's tied up, and whether your business is taking unnecessary risks.

Start by following the cash required to deliver one product or service. When does it leave? Where does it get tied up? When does it return?

Then evaluate your options.

My goal with The Leap is to provide you each Saturday with the knowledge, tools and lessons learned to help you get started and keep going toward building your future. 

Whether you are making the leap to startups, solo-entrepreneurship, freelancing, side hustles or other creative ventures, the tools and strategies to succeed in each are similar.