The brutal reality of theoretical vs. experimental physics! What starts as "just a quick peek" into classical mechanics turns into a week-long existential crisis. That green portal represents the deceptively simple Newtonian equations that seem straightforward until you actually try applying them to real-world systems with friction, air resistance, and all those pesky non-idealities. The "20 minute adventure" is every physicist's famous last words before discovering that solving real problems requires supercomputers, differential equations from hell, and questioning your entire career choice. Classical mechanics: where F=ma until it suddenly, horrifyingly doesn't!