Every great scientific breakthrough begins as an idea.

Some ideas become revolutionary discoveries.

Some disappear into forgotten notebooks.

And some are rejected by a selection committee because they are considered “too impractical”, “too confusing”, or “not nearly wrong enough”.

At the Festival of Bad Ad Hoc Hypotheses (BAHFest), countless ambitious theories have been imagined, researched, and prepared for presentation. While only the strongest—or most spectacularly incorrect—ideas make it onto the stage, many rejected hypotheses still deserve recognition.

After all, a theory does not need to win an award to be beautifully misguided.

This is a celebration of the ideas that almost made it: the forgotten masterpieces of questionable reasoning, the discoveries that never happened, and the scientific arguments that were perhaps rejected simply because the world was not ready.

The Forgotten Art of the Almost-Bad Theory

Creating a BAHFest theory is a delicate process.

A successful hypothesis must achieve a difficult balance:

• It must sound scientifically plausible

• It must contain impressive reasoning

• It must have enough evidence to support the argument

• It must eventually arrive somewhere completely impossible

Many ideas fail because they are too obvious.

Others fail because they accidentally become interesting scientific questions.

The perfect BAHFest theory exists in a narrow space between genuine curiosity and complete nonsense.

Some rejected theories were not bad enough.

Others were far too good.

The Theory That Almost Explained Why Keys Disappear

Everyone has experienced the mystery.

You place your keys somewhere safe.

You return moments later.

They are gone.

Traditional explanations include memory mistakes, misplaced objects, and human error.

But this theory proposed something far more exciting:

Keys are not lost. They are temporarily relocating themselves.

The Hypothesis: Keys Possess a Short-Term Escape Response

According to the theory, keys developed a survival mechanism after centuries of being carried, dropped, and ignored.

When they sense human dependence, they activate a temporary disappearance response.

Evidence included:

• Keys vanishing immediately before leaving the house

• Keys appearing in locations nobody remembers visiting

• Keys becoming visible only after a replacement has been purchased

The theory was rejected because judges reportedly questioned one major issue:

“If keys can disappear voluntarily, why do they always come back?”

A fair question.

Although unanswered, it remains an excellent mystery.

The Theory of Intelligent Queue Formation

Queues are one of humanity’s greatest shared experiences.

They appear everywhere:

• Supermarkets

• Airports

• Coffee shops

• Theme parks

And somehow, the queue you choose always seems to move slower.

This rejected theory proposed that queues are not random.

They are aware.

The Hypothesis: Queues Optimise Human Regret

The theory suggested that queues have developed a hidden intelligence designed to maximise uncertainty.

Their purpose is not efficiency.

Their purpose is emotional testing.

Evidence included:

• The faster movement of neighbouring queues

• The immediate acceleration of your original queue after you leave

• The suspicious timing of unexpected delays

The theory was almost accepted until researchers encountered a problem:

How do you interview a queue?

Unfortunately, the queue refused to comment.

The Theory That Dogs Invented Walks

Dog owners understand the mystery.

A dog may spend hours relaxing, sleeping, or ignoring every instruction.

Then someone mentions the word “walk”.

Suddenly, the dog becomes a highly motivated athlete.

This rejected hypothesis suggested that walks were not created for dogs.

Dogs created walks for humans.

The Hypothesis: Dogs Developed Exercise-Based Human Management

According to this theory, dogs recognised that humans spend too much time indoors and developed a behavioural system to encourage outdoor activity.

Supporting evidence:

• Dogs repeatedly request walks

• Humans become healthier after walking dogs

• Dogs appear satisfied when humans follow instructions

The theory was rejected because it raised an uncomfortable question:

Who is actually training whom?

The research team is still investigating.

The Theory of Self-Aware Household Appliances

Modern homes contain many mysterious machines.

Some work perfectly for years.

Others fail immediately after their warranty expires.

This theory proposed that household appliances are not malfunctioning.

They are negotiating.

The Hypothesis: Appliances Understand Their Economic Value

According to the theory, appliances have developed an advanced awareness of financial timing.

They calculate:

• Age

• Replacement cost

• Owner attachment

• Repair difficulty

Then they choose the most inconvenient moment to stop working.

Evidence:

• Washing machines failing before important events

• Printers refusing to cooperate under pressure

• Computers updating when deadlines approach

The theory was rejected because appliances were unavailable for interview.

Their silence remains suspicious.

The Theory That Plants Are Secretly Competitive

Plants appear peaceful.

They sit quietly, absorb sunlight, and grow slowly.

But perhaps this calm appearance hides a much more dramatic reality.

This rejected theory suggested that plants are engaged in constant competition for human attention.

The Hypothesis: Houseplants Manipulate Their Owners

Evidence included:

• Plants growing better when praised

• Plants declining when ignored

• One plant appearing healthier than another despite identical care

The theory proposed that plants developed subtle psychological strategies to become the favourite household organism.

It was rejected because researchers could not determine whether plants were competing—or simply trying to survive.

A disappointing level of uncertainty.

Why Rejected Ideas Matter

In science, rejected ideas are not always worthless.

Many genuine discoveries begin as unusual questions that require refinement.

The difference between a promising hypothesis and a BAHFest theory often comes down to one important detail:

Does the evidence support the explanation?

BAHFest explores what happens when that question is deliberately ignored.

Rejected BAHFest theories are valuable because they reveal the creative process behind bad science. They show that imagination comes before accuracy—and sometimes the most entertaining ideas are the ones that never had a chance of being correct.

An Invitation to Revive the Forgotten Theories

Every BAHFest organiser knows there are ideas that almost made it.

Perhaps the presentation was too complicated.

Perhaps the evidence was not sufficiently questionable.

Perhaps the conclusion was accidentally reasonable.

These theories deserve another look.

Bring back the abandoned hypotheses.

Revisit the forgotten diagrams.

Dust off the suspicious research notes.

Because somewhere among the rejected ideas may be a truly exceptional bad theory waiting for its moment.

A theory that is:

• Carefully researched

• Beautifully presented

• Internally consistent

• Completely impossible

Exactly as science intended.

The Future of Almost-Great Bad Science

The history of BAHFest is built not only on the ideas that reached the stage, but also on the countless theories that existed along the way.

Every rejected hypothesis represents curiosity, creativity, and a willingness to explore unusual possibilities.

Some ideas deserve another chance.

Not because they are correct.

Not because they will change science.

But because they might just produce the perfect combination of confidence, creativity, and spectacularly incorrect reasoning.

And that is exactly the kind of discovery worth celebrating.