Scale is one of the main reasons Harry Beck's map worked. Central London on an accurate map isn't that confusingly laid out at a large enough scale. But the out

Scale is one of the main reasons Harry Beck's map worked. Central London on an accurate map isn't that confusingly laid out at a large enough scale. But the outlying suburbs are just so far away, and the schematic is a lot less confusing for the intended purpose of getting the correct train connection than flipping back and forth between different maps and insets at different scale levels