C++ really said "why choose when you can have them all?" and went full bracket buffet mode. While other languages are out here picking sides like it's some kind of syntax civil war, C++ just casually accepts parentheses, square brackets, angle brackets, AND curly braces for function calls. It's like that friend who orders one of everything at a restaurant. The template syntax with angle brackets is particularly chef's kiss—nothing says "I'm a serious systems programmer" quite like Sum<1, 2, 3> where the function arguments become template parameters. Because why pass values at runtime when you can compute them at compile time and make your build take 47 minutes? This is peak C++: maximum flexibility, maximum complexity, and maximum "I can do whatever I want because I'm basically writing assembly with extra steps." Other languages have syntax rules. C++ has syntax suggestions .