Noise
It was like 20 years ago, I couldn't recall who was the professor on the course called "Business Communication", I could only recall she was a foreigner who could not speak Cantonese, I could only use English as a medium to communicate. However, the concept of "NOISE" planted in my brain since then.
Such concept pops up again last year, I sat down in a classroom and learnt such concept again. I thought I should have understood what it is all about it, and know the tricks to comprehend by now. However, in the reality, it turns out a disaster.