Comment by spreeker

1) Learn the limits of your own brain and of the average human brain. On average someone can remember about 7 items. So do not write functions with more variables. Cut problems in many stupid little problems which are easy to reason about and debug. So whenever you see a function gets to 25 lines cut it up in to pieces. Because of your own/average brain limits large functions are garanteed (95% sure) to have bugs. 2) Test all your assumptions you make about code and build on those assumptions and build tests to check them. So you keep building on a solid code base that does not "surprise" you. 3) Be crazy about Good variable names and clear functions names and avoid abreviations because those costs brain cycles.