Many people say they want to have ‘travelled the world’ but how can we quantify this? Countries visited? Passport stamps? Borders crossed?

How many times have you heard someone say it? Or read a blog post about it? Seen it in an Instagram status or on a bucket-list? Scores of people (including me) say they want to ‘travel the world’ but how can we quantify this? By the number of countries visited? Stamps in our passports? Borders crossed? Cultures experienced?

Kia asked this question on Quora a while ago and received a response from Jay Wacker, a former Stanford professor who offered up Hasbro’s Risk Map as a measure, suggesting that you can say you’ve travelled the world once you have visited half the territories on the map – that’s 21 out of 42 in total.