A Grand Unified Theory of N+1

In the grand library of physical laws that govern our universe, certain equations possess an elegant, haunting simplicity. E=mc². F=ma. And, of course, the formula for determining the correct number of bikes to own: N+1.

This is commonly known as Rule #12, one of a set of commandments handed down by a shadowy cabal calling themselves The Velominati.

But to dismiss it as a mere ‘rule’ or, worse, a ‘meme’, is to fail to grasp its profundity. It is not a guideline. It is an axiom, a physical constant describing the relationship between matter, desire, and available garage space.

The full theorem, for the uninitiated, is a two-part masterpiece of celestial mechanics. The first postulate defines the optimal number of bikes as N+1, where N is the number of bikes currently owned.

The second, a crucial balancing force that prevents the universe from collapsing into a singularity of endlessly accumulating carbon fibre, defines a practical limit: S-1, where S is the number of bikes that will result in separation from your partner.

Let us first examine the variable N. N is not simply a number; it is a catalogue of past solutions to solved problems.

Your N might contain a road bike for going fast on tarmac, and a gravel bike for going moderately fast on not-tarmac. This is a simple, stable N of 2. But the universe abhors a vacuum.

What if the tarmac is exceptionally steep? Your road bike is an aero bike, optimised for flatland speed; its deep-section wheels are a liability in a crosswind and its aggressive geometry is hell on your lower back after four hours. Clearly, the equation demands a lightweight climbing bike. N becomes 3.

But now your gravel bike feels compromised. Its 40 mm tyres are perfect for hard-packed fire roads, but what about singletrack, or a multi-day bikepacking trip? You need a gravel bike with clearance for 2.1-inch tyres, a slacker head angle, and a multitude of mounting points for bolt-on accessories you have not yet purchased. N is now 4.

And we have not even discussed the hardtail mountain bike for proper trails, the full-suspension bike for when the proper trails get improper, the vintage steel L'Eroica-compliant restoration project, the Brompton for zipping to the train station, or the e-cargo bike that you justified as “basically a second car” – a fiscal deception of the highest order.

N is history. The +1 is the future. It is pure, uncut potential; the bike that will finally make you fast, or adventurous, or happy. It is the missing piece.

The +1 whispers to you from the geometry charts of obscure framebuilders and the pastel-coloured anodising of boutique components. It is the answer to a question you have yet to formulate, but which you feel deep in your bones.

‘What if I wanted to ride the Tour Divide?’ you might muse, despite living in a third-floor flat in suburban London. The +1 has the answer: a titanium bikepacking rig with a Pinion gearbox.

This is where the second postulate, S-1, exerts its gravitational pull. S is the most terrifying variable in all of science.

It is cycling’s equivalent of the Heisenberg Uncertainty Principle: the moment you attempt to precisely measure S, you have already altered its nature and invited catastrophe. It is a quantum state, a superposition of silent disapproval and outright ultimatums.

Physicists have spent decades trying to pin down the value of S. Is it a fixed integer? Does it fluctuate based on ancillary factors, such as the timely deployment of flowers, the successful assembly of flat-pack furniture, or the feigning of interest in a partner’s hobbies?

Early experiments in this area suggest that pretending to care about pottery glazing can increase S by a value of 0.25 for a period of up to three fiscal quarters.

The most common strategy for managing the S-1 constraint is the “one in, one out” policy. This is a lie. It is a comforting fiction we tell our partners and ourselves to maintain domestic harmony.

It has never been successfully implemented. The true formula is closer to “one in, one hidden in a friend’s shed for six months until it can be quietly assimilated into the main fleet under the cover of darkness.”

The N+1 equation is, ultimately, a perfect mirror of the human condition. It acknowledges that contentment is a temporary state, and that desire is infinite.

The cycling industry understands this. It is why bottom bracket standards change every 18 months, and why we now have ‘downcountry’ bikes, a category that exists in the infinitesimal space between ‘cross-country’ and ‘trail’.

The +1 is not a bike; it is the promise of a new identity. With this gravel bike, you will be a rugged adventurer. With this aero bike, you will be a razor-sharp racer.

You will, of course, be the same you, just with a different bike and a slightly smaller bank balance, but that is a problem for future you.

There is a warmth to it, too. A shared language of ludicrous self-justification.

Ask any cyclist why they need another bike and they will deliver a lecture of such technical detail and specious logic that you can’t help but admire the artistry. We are all co-conspirators in this beautiful, absurd, and deeply irrational equation.

The system is perfect. The logic is flawless. N+1 is eternal. Now if you’ll excuse me, I’ve just realised my winter training bike has entirely the wrong bottom bracket height for maximising gluteal activation on sub-5% gradients. The search begins.