Just the other day I took a double decker bus from Vivo City. A young normal looking chap in his 30s wearing shorts and shirt boarded the bus. He was talking excitedly like as if he was in some phone conversation with someone in Mandarin over some business deals. At first I find it normal. But I gradually sensed something amiss when he talked non stop for nearly the whole of the bus journey. When he stood up from his seat and alighted at MacPherson, I saw he was not wearing any blue tooth at all.