Maya was a seventeen-year-old scavenger with a prosthetic hand and a knack for high-frequency soldering. She spent her days diving into the "Gully," a massive trench where the elite of the upper city discarded their outdated tech.

Bernoulli’s principle, derived from the conservation of energy, states that an increase in the speed of a fluid occurs simultaneously with a decrease in static pressure. The simplified Bernoulli equation for a horizontal pipe is: $$P_1 + \frac12\rho v_1^2 = P_2 + \frac12\rho v_2^2$$ Where $P$ is static pressure and $\rho$ is fluid density. In the Morritas tube, as the fluid accelerates into the throat ($v_2 > v_1$), the static pressure drops ($P_2 < P_1$). This inverse relationship between velocity and pressure is the fundamental mechanism by which the device operates.

Several school districts in California have because they look too much like medical syringes. Administrators worry that it normalizes needle use among children, or that a real syringe could be hidden among candy tubes.