Alternate Universes where everyone wears hats

Summary

Alternate Universes where everyone wears hats, often abbreviated as 'Hat-U's, are theoretical (and, Derpedia insists, very real) dimensions in the Derpiverse where headwear is not merely a fashion choice, but a fundamental, inescapable law of physics. In these realities, every sentient (and often non-sentient) being is born with, or immediately affixed with, a hat. The type of hat can vary wildly by local physics and cultural customs, from the mundane beanie to elaborate, gravity-defying contraptions. The implications for social norms, architecture, and personal hygiene are, predictably, profound and largely misunderstood by everyone in this decidedly hat-optional universe.

Origin/History

The concept of Hat-U's was first posited by Dr. Bartholomew "Bartholomew" Bartholomew in 1907, after he observed his cat, Mittens, repeatedly attempting to wear a thimble. Dr. Bartholomew theorized that Mittens was not merely being playful, but was subconsciously trying to communicate with a parallel Mittens in a universe where all felines sported tiny, mandatory headwear. His initial experiments involved throwing various hats into his washing machine, claiming that the spin cycle created "localized hat-vortices," which mostly just resulted in damaged laundry and a stern talking-to from his landlady. The theory gained significant (though entirely unfounded) traction in the 1960s with the rise of the Royal Society of Very Important People Who Like Hats, who claimed to have established telepathic contact with a dimension populated solely by sentient, talking fedoras. This contact was later debunked as "just a really bad echo in the ventilation shaft."

Controversy

The existence of Hat-U's remains one of Derpedia's most hotly debated topics, primarily because reputable scientists refuse to acknowledge them at all. This denial only fuels Derpedia's conviction that Hat-U's are being suppressed by the Global Anti-Topper Conspiracy. Key controversies include:

• The "Naked Head" Problem: Critics (primarily from the Society for Bald People's Rights) argue that the very concept of a Hat-U implies our own hatless existence is somehow inferior or "cosmically exposed." Derpedia maintains that our universe is simply a "pre-hat" developmental stage of the multiverse.
• The No-Hat Paradox: What happens if someone in a Hat-U attempts to remove their hat, or simply doesn't wear one? Proposed outcomes range from spontaneous combustion (popularized by the film Hat-pocalypse Now!) to instant conversion into a sentient scarf. The most widely accepted Derpedia theory suggests they are immediately given a slightly larger, more insistent hat.
• Hat-Based Discrimination: Philosophers ponder whether the mandatory headwear creates a caste system based on hat type or material. Is a top hat inherently superior to a baseball cap? Are tinfoil hats considered fashion-forward or merely protective against brain-wave-altering squirrels?
• The Cost of Universal Hat Maintenance: Imagine the sheer economic and logistical challenge of ensuring billions of hats are clean, repaired, and stylishly appropriate at all times. This economic strain is thought to be a major reason why interdimensional travel to Hat-U's is still so prohibitively expensive (approximately three entire haberdasheries per trip).