The PPT had glitched into reality. A diode (Slide 12) was shorted, causing her dorm’s lights to strobe. A Zener regulator (Slide 31) was avalanching, sending voltage spikes through her phone charger. And the worst: the 2N3904 NPN transistor from Slide 52 was in cutoff mode when it should be saturated, cutting power to the campus server room.
The campus lights steadied. The server hummed back to life. The PPT froze one last time—not as a crash, but as a completed circuit.
"You’ve learned more in four hours than in four weeks. But one error remains."