Dynamically altering functions in C++ creates new opportunities for flexible system development, particularly in game creation. By dynamically changing the Play() function, developers can improve card mechanics. Function pointers, std::function, and lambda expressions allow for real-time changes rather than hardcoding every update.

This talk focuses on the reasons why it's not always the best idea to use JavaScript's typeof function to determine whether a given value is a function. Other methods provide a more thorough examination of the value, such as verifying function-specific features like call and apply. In specific situations or use cases, these techniques offer greater accuracy, particularly when working with unique or complicated items.