That crushing moment when theoretical meets practical! Physicists venturing into electronics often design circuits with precise resistance values from their equations, only to discover the cruel reality of standardized resistor values. No, you can't just waltz into a store and ask for a 6.18457216 ohm resistor! The electronics world operates on the E-series system with standardized values (like 4.7Ω, 5.6Ω, 6.8Ω). The bewildered expression perfectly captures that "my beautiful equation is ruined" realization when theory collides with what's actually available on the shelf. Time to learn about resistors in parallel and series, my friend!