04 April 2026

Latent Heat & Latent Need

Latent Need?

How did this term evolved from thermodynamics to marketing?

The migration of the term "latent" from physics to marketing didn't happen in a single leap. It was a gradual "trickle-down" process that moved from the hard sciences into sociology and economics before finally becoming a cornerstone of modern marketing strategy.


I remember my university days when I came across the word latent. It was in the form of latent heat, as we were taking lectures (1975), at mechanical engineering department in University of Manchester. Electrical and Electronic Engineering building, looking west towards Brunswick Street was neighbouring; left side with mechanical engineering and right side with chemical engineering on Dover Street. I always considered that chemistry was never my cherished field of interest. Therefore I was meant to have a desire in physics and the building was located just across the road.

Now almost 50 years after graduation I still enjoy learning from respectful experts. Continue to educate leaders to embrace communities by appreciating their hidden ambitions and aspirations. This is where the word Latent starts to depict a path towards its journey to sales and marketing. Notably, why it has become a critical question continuously asked to new ventures, initiatives and start-ups?

First of all let’s dwell into the scientific explanation. I may be able to interpret the concept in its simplest illustration as shown above.

The Physics Origin: "Latent Heat" (1760s)

The term first gained scientific prominence through the Scottish chemist Joseph Black around 1762.

Black noticed that when you boil water or melt ice, the temperature stays the same despite the constant application of heat. He realized the heat wasn't "disappearing"; it was being used to change the state of the matter. From outside it looked like energy is being wasted. However it was performing an amazing transformation.

He called this "Latent Heat" because it was "hidden" from the thermometer. It was there, doing work, but you couldn't see it until the phase change was complete. Once the transformation is complete instruments started to show the real change. Moving up or down depending whether heating or cooling is taking place.

Ice/Water/Steam are used as examples as matter changes states;

Flat Lines (Plateaus): The points at 0oC and 100oC where the temperature remains constant are where latent heat is active. In these regions, the energy is not used to increase the temperature, but rather to break the bonds between molecules (changing the state of matter). The reverse is also true as the water cools it releases the latent heat absorbed inside the molecules. In this case, the substance is giving off energy to its surroundings.

Sloped Lines: These are the regions where the substance exists in a single phase (only ice, only water, or only steam). Here, the energy provided directly increases the kinetic energy of the molecules, causing the temperature to rise. The temperature of the water will not drop below 0oC until every single molecule has turned into ice. It "pauses" its cooling to finish the phase change.

Energy Balance: The amount of energy released during condensation is exactly the same as the energy absorbed during boiling. Physics is perfectly symmetrical here!

Now that the concept is somewhat clearer why this terms has appeared in marketing, a latent need refers to a problem or desire that a consumer has but is either unable to articulate or is not yet consciously aware of. Obviously the term didn’t just appear out of the blue sky it gained traction through the years. Unlike manifested needs, which are clearly understood and actively sought out (like being hungry and wanting a sandwich), latent needs are "sleeping" beneath the surface.

The Marketing Arrival: "Latent Needs" (1970s–1990s)

By the late 20th century, marketing evolved from "selling what we make" to "making what people need."

The "Innovation" Era: Thinkers like Clayton Christensen (Jobs to be Done) and the rise of "Design Thinking" popularized the idea that the most profitable products are those that solve problems people don't even know they have yet.

Thus latent was used to describe unspoken human desires and social signals, moving the word away from physical atoms and toward human psychology.

Not to forget even the known inspirations, likes and simple essentials are evolving at a very rapid pace. Therefore predicting the future resides in the minds of extreme geniuses. Marketing experts often categorize these as "unmet needs" that the consumer didn’t realize can be solved until a specific product or service is presented to them. And yet once the product is within the grasp than the response is usually “I always what’d to have this”

It is also true that without even thinking slightly the solution fills the need, instantly becomes a commodity. Do you remember those days when the car doors were unlocked by keys? Nowadays remote gadgets perform the same task.

So what would be couple of suggestions to young generation who are in search of newness? Since consumers can’t tell you what their latent needs are, traditional "What do you want?" surveys often fail. Instead, marketers use:

Ethnographic Research: Observing people in their natural environment to see where they struggle, take shortcuts, or look frustrated. Different geographies may represent unique and diverse longing.

The "Jobs to be Done" Framework: Focusing not on what the customer buys, rather what they are trying to achieve. Even though they cannot express or define the hidden crave.

Trend Analysis: Looking at shifts in technology or society that might create new opportunities or possibilities.

Today, "latent need" is the marketing equivalent of Joseph Black’s "latent heat." Just as Black’s heat was "hidden" from the thermometer, a latent need is "hidden" from traditional market surveys. It is the energy for a "phase change" in the market—like the shift from physical Betamax Cassettes to on line streaming content.

So should the start-ups plan to invest, time and energy to be injected to state change? Easier said than done with very limited resources. Since this will lead to nowhere concrete and tangible. Yet it is vital to establish a platform ready to accept the challenge. It won’t be a simple game changer because what is being targeted is psychological. Resistance should be expected without ever giving up. İt is evident that failures are natural and must be treated as learning experience.

As a summary accepting Latent is like looking down the well to clean water, several meters deep. Once light is shown down it would be a matter of time to design a windlass to pull out idea.

Final thought would be to devote rigorous momentum to understanding the whereabouts of Latent Need. It will seem in vain initially however persistence will illuminate the path.

Best wishes & Good Luck.