Works every time

That's not efficient. It's an unfinished job.

I dont get it

In reality: Interviewer: "We will call you" (in corporate language this means you didn't get the job 99% of the time)

There's being efficient and there's respecting the instructions. If somebody asks you to describe yourself in 3 words and you use only 1, even if the word is "Efficient" you smartass, you don't pass as efficient, you pass as lazy.