Apple has added inline code execution to Playgrounds to help programmers create a chunk of code or write an algorithm while getting feedback along the way. This feedback loop can improve the speed at which code can be written because the mental model that a traditional programmer needs can be replaced with data visualizations in Playgrounds. Programming is an iterative process, and any strain that can be reduced or used to complement the creative process will make programmers more productive and free them to solve bigger problems, rather than focusing on boring details that traditional compilers have imposed on programmers.