Silas spent his days staring at the "Great Problem"—a set of incomplete scrolls titled

Then came the second part—the "Momentum" term. This was where the magic (or the nightmare) lived. The scrolls taught him that every drop of water felt the push of pressure, the pull of gravity, and, most frustratingly, the "friction of itself"—.

By calculating the transition, Silas realized the water wouldn't just rise—it would rotate. He pointed toward the southern wall. "The pressure isn't coming from the front! It’s the vortex forming behind the pillar! Brace the back-flow, or the wall will collapse from the inside out!"

He returned to the Lyceum, opened a fresh parchment, and began to write his own chapter: An Introduction with the Understanding that to Flow is to Live.

Silas struggled with the first part of the equation: Mass can neither be created nor destroyed. If water entered a pipe, it had to come out. It seemed simple, yet as he watched the river crash against the city piers, he saw the water compress and leap, behaving like a living thing.

In the coastal city of Aethelgard, the air was never truly still. To most, the wind was just a breeze, and the river was just water moving toward the sea. But to Silas, a young scholar at the Royal Lyceum, the world was a chaotic tapestry of invisible threads.