But today, some emerging economies are starting to leapfrog ahead. Why build a network of telephone wires out to remote areas when you can go straight to a cutting-edge mobile network at a fraction of the cost? Why burn fossil fuels for electricity and cooking if cleaner - and in some cases cheaper - alternatives, like solar and biogas, are available? Why electrify rural villages with incandescent bulbs if longer-lasting, environmentally friendly options like LEDs or new fluorescent bulbs exist? In many cases, it is mature markets like the United States and Europe, tethered to older systems, that find themselves playing catch-up.
