Namespacing

When your variable names are so generic that the computer needs a philosophy degree to figure out what you're actually talking about. The ship's computer is out here asking for clarification on "hot" like it's debugging your terrible code at warp speed.

The computer's sitting there like "hot could mean literally anything - CPU temperature? Tea temperature? The sun? A fire? Your mixtape?" Meanwhile, it interprets "hot" as 1.9 million Kelvins and proceeds to serve Picard some plasma instead of Earl Grey.

This is why we namespace our variables, folks. Otherwise you end up with temperature.external vs temperature.beverage instead of just screaming "HOT" into the void and hoping the compiler figures it out. Scope matters, or your tea becomes a thermonuclear incident.