We are programmed to react to negativity, not positivity. When you visit my local chemist you have to park on the pavement. There is a proud sign in the window that states only customers can park outside the door. Yes, it is a pavement, but it is so large it accommodates cars and pedestrians. Whilst waiting outside, I saw a lady pushing a double buggy towards the cars. The buggy was empty, I have no idea why. She struggled to get the buggy past two of the cars. Having struggled with a pram, I got out and asked if she would like a hand.