While wandering around London, where I’m attending CS Forum 11, I’ve got lost a couple times. So I’ve found myself consulting map signs on the sidewalk.
Here are close-ups of two that I used. They are very similar, but one was instantly more helpful than the other. Can you guess which one and why?
That little line represents the street sign I was looking at, so I instantly knew which way I was facing. That information combined with my knowledge of where I wanted to go helped me get there faster.
Good navigation not only tells you where you are, but also give you orientation — it accounts for your context.