Picture the scene, you’re on a busy commuter train and the person opposite you suddenly starts clutching at their chest, their breathing becomes rapid and their skin turns an ashen shade of grey. Would you know what’s wrong? And would you know what to do? This person is having a heart attack… they could die. Someone needs to act, and act fast to assist them and potentially save their life.
When you look at an engine do you understand it? Or like the former me, do you look at the mysterious lump of metal with a slight panic and fear, and then walk away and leave it to the experts?!