The OSI model we learned in school vs. the OSI model we actually use in the real world. Sure, layers 1-7 handle all that boring technical stuff like physical connections and data formatting, but the true networking magic happens in layers 8-10!
Layer 8 (PEBKAC): Where the user swears they "didn't touch anything" right before the entire system implodes. Coffee spills are just bonus features.
Layer 9 (Political): Where your elegant technical solution gets buried under "but the CEO wants it purple" and endless meetings that could've been emails.
Layer 10 (Government): The final boss where your project gets strangled by red tape so complex it makes quantum physics look like kindergarten math.
Funny how no certification exam ever prepares you for the layers that actually determine if your project lives or dies!