Writing Less Error-Prone Code

How to optimize for a living codebase, where a line of code will be repeatedlyread, adapted and copied.How much time do you spend thinking about making code less susceptible to errors in the future?A line of code you write in a codebase under active development may be read tens, hundreds or thousands of times. This line is likely to be adapted, moved and copied multiple times. How should we optimize for this reality of a living codebase?.