I'm trying not to be mean, but this article is so naive and insular that it's almost like it was published on a solar powered website or something. Like bikes and cars, we have both bows and arrows and guns already. We use them according to our requirements and their performance characteristics. That pretty much means bows get used for fun and to get a few extra weeks of hunting season, and guns are used for everything else. We use bikes more because there are more cases when they are useful. It's not a philosophical question for anyone trying to choose the right tool for actual, real world job.