We all say “You can make mistakes. It’s normal….” Well, many everyday mistakes are not really OK or tolerable or normal. Many fellow programmers make obvious mistakes.

#1 example — Every time you turn a corner in your car, your competence is tested. If you aren’t competent you can easily cause a serious accident.

eg: first time you write a little algorithm or a class, your coding competence is revealed and evaluated.

eg: Every time a musician plays a note, her competence is tested. Don’t talk about violin or guitar. Even on piano, the touch would be obvious.

eg: Every time a sales person drafts a client letter or a management report, her competence is tested.

eg: The very first sentence a presenter said, shows her competence.

eg: As soon as you write a Chinese character with a pen, people know your Chinese basic training.

eg: Every interview is such a test.