Before visiting somewhere new, it is easy to feel informed. We can compare prices, weather, journey times, demographics and thousands of reviews. The data is useful. It reduces uncertainty and helps us make better plans.
But a place is not the sum of its indicators. It is the pace of a morning, the distance people keep when they talk, the things a city repairs and the things it allows to fade. These signals are difficult to collect and almost impossible to understand from a distance.
Travel is valuable because it makes our models collide with reality. We discover which assumptions travelled with us, which questions we forgot to ask, and which measurements were only proxies for the thing we actually cared about.
The lesson applies beyond geography. Data can sharpen judgement, but it cannot replace contact with the world. The best understanding usually comes from moving between the two: measure, observe, update, repeat.