Trust is an ambiguous concept. Psychologists over the years have tried to understand the nature of trust, why people trust each other and how important 'trust' is, to hold society together. What would you do if you woke up in the morning and realised that there wasn't a single person in this world whom you could trust?

See a penny pick it up; all day long you'll have good luck…
Familiar phrase, don't you think? Of course it is. We have after all heard it in so many movies we have watched.