What can be the logic behind that ??????

I've noticed for years that every advertisement for a clock

or watch ALWAYS has the hour hand on 10 and the minute

hand on 2. Would you please help me to make me out from 

this CONFUSION .......... 

new innovation in technology

Recently we have heard about earphones in mobile to listen music personally. Whats happen when our friend ask us to listen that music also we have to share one part of that with other which degrade the quality of music and perhaps a disturbance also. I have an idea to change that what happen if some instrument work on earphone in such a way that allow another earphone to connect with that earphone in that way we can increase sharing of music and quality remains as it is. Thinks about that guys its my prediction................