👉 The "what's fluid" refers to the part of a computer's or system's memory that can be dynamically allocated, modified, or deleted during runtime. This includes variables, data structures, and objects whose lifetimes are not fixed at compile time but are managed by the programming language or runtime environment. Unlike static memory, which is allocated at compile time and remains fixed throughout the program's execution, fluid memory allows for more flexible and efficient use of resources. This dynamic nature is particularly useful in scenarios requiring variable data sizes or complex data structures, enabling developers to write more adaptable and efficient code.