Whether or not Moore's Law on complexity has always held true, you've had one constant in the semiconductor world: chip makers would always find a way to shrink transistors and create more powerful chips without increasing size or power consumption. However, even that one hint of predictability might soon disappear. The Semiconductor Industry Association (which includes the likes of IBM and Intel) has published a roadmap which expects transistors to stop shrinking after 2021. Simply speaking, it might not be financial practical to keep reducing transistor sizes -- companies might not recoup the costs. Instead, they may focus on 3D chips an other technologies that make better use of available space.