How to Count to Infinity

As a child, one might have imagined counting to ten billion in the course of reckoning with the seeming infinitude of enormous numbers. This is actually impossible to do in a human life time, since it would take over three hundred years. But, as an adult, one might discover that he can simply will himself from zero to that number, or even moreā€”at least as long as he is counting in dollars, as the founders of Snapchat and Uber have discovered, whose companies are now valued at more than ten billion dollars. A lingering question: now that the ten-billion-dollar frat has become a little less exclusive, who will be the first to reach infinity?#