Drawing rather than writing is just one method. A lot of it will likely be conversational. I could imagine a designer with an AR overlay speaking to a computer which offers several prototypes based on an expressed intent. The designer chooses one and offers criticism just as a boss would review an alpha version and suggest changes. The machine responds to the suggestion and rewrites the program in a few fractions of a second. The designer continues the conversation, maybe draws out some designs with a pencil, describes a desire, references another program which the machine analyzes for inspiration, and the machine adjusts the code in response. This is just one of many possible examples. The point is that software design is trending toward more automation. Coding is not a new essential skill that everyone will need on the future. Human-machine interactions are trending toward natural and automated methods, not manual code entry. Most people need to learn to be creative, think critically, analyze problems, not learn the conventions of programming languages.