This video of silent motor cycle. Perhaps you should take another and this time be sure of the sound being present. After all, should not be impossible to do this.

People here are saying how cold it is. Cold? I say to them. You should be living in my country where we know what cold is. Although our cold is not damp cold like it is here, and maybe  that is what makes people feel it is really cold. When it isn't.

I go to my 11 am lecture. Slightly late.

Anna