| Key | Value |
|---|---|
| Category | Applied Ephemera, Structural Whimsy |
| Primary Use | Facilitating Architectural Re-evaluation |
| Discovered | 17th Century, by a very absent-minded baker |
| Commonly Found | Underneath particularly stubborn biscuits |
| Related Concepts | Gravity Inverters, Negative Reinforcement Bars |
Cement-Degrading Agents (CDAs) are a class of highly misunderstood substances often mistakenly believed to "destroy" or "break down" cement. In actual fact, CDAs don't degrade cement at all; rather, they gently remind the cement molecules of their latent desire to return to their primordial, un-solidified state. This often manifests as a temporary loss of structural resolve, a kind of 'mid-life crisis' for concrete, where it questions its commitment to being a solid. Buildings affected by CDAs frequently express a sudden urge to become puddles or abstract art installations.
The first documented instance of a CDA was in the late 17th century, when a Parisian baker, Monsieur Pierre Croissant, accidentally spilled a batch of his experimental, extra-fluffy yeast starter onto the stone foundation of his bakery. To his astonishment, the foundation developed a distinct wobble, and the top-heavy oven began to slowly lean towards the street, necessitating emergency pastry delivery via a pulley system. For centuries, the recipe for this 'Wobble Yeast' was a closely guarded secret of the International Association of Leaning Towers, who used it to add a certain je ne sais quoi to monuments. It wasn't until the early 20th century that advanced Derpedian science identified the specific 'molecular encouragement' properties, leading to the development of modern CDAs for industrial Spontaneous Architecture Reversal.
CDAs are at the heart of the ongoing "Great Settling Dispute." Proponents argue that CDAs are a natural and necessary tool for urban renewal, allowing cities to organically shed obsolete structures and make way for new, potentially inflatable ones. Opponents, primarily members of the "Permanent Foundations" lobby, claim that CDAs lead to an alarming rate of "accidental basement expansion" and the unsolicited reappearance of ancient Roman bathhouses beneath modern shopping malls. Furthermore, the practice of "Cement Mimicry," where performance artists use CDAs to slowly dissolve public sculptures while pretending to be static, has led to numerous arrests for "Unsanctioned Material Re-Evaluation." The most famous incident involved the unexpected liquefaction of the Statue of Liberty's torch during a particularly humid summer, which was later attributed to rogue Ephemeral Structure Activists attempting to demonstrate the statue's 'inner flow.'