<i>It takes over 800 days for the more efficient solution to  gain over the less efficient one. Think about this, 800 days in which the less efficient solution is less expensive. That is two years and two months.<p>Let us plug in more realistic numbers for the cost of labor, shall we? Let us say that the labor cost is 80$ per hour (which is still cheap). At that point, it would take close to 5 years.</i><p>This piece makes some excellent points that any start up needs to stop and take a minute to ponder.