The assignment discusses the concept of null references, their implications on code security and complexity. It highlights how null references can cause problems such as increased complexity due to exception handling, security concerns due to bypassing compile-time checks, and memory safety issues due to accessing out-of-bounds memory locations. The discussion also touches upon Rust, a programming language designed to be more secure than contemporary languages like C and C++. The assignment concludes by recommending the use of C++ for commercial software development due to its established ecosystem, performance, and availability of skilled programmers.