The eternal struggle of every engineering student staring at equations. V could be voltage in circuits, viscosity in fluid dynamics, velocity in mechanics, volume in geometry, or volumetric flow rate in hydraulics. And that's just the Vs! Wait until you encounter P (pressure, power, momentum, probability...) or E (energy, electric field, Young's modulus...). Science notation: where a single letter represents five different concepts in the same textbook. No wonder Fry looks confused—he's one variable away from a mental breakdown.