The dirty secret is that you can't really make a transistor much smaller than about 30nm. The contacted gate pitch (for all intents and purposes this is the 's

The dirty secret is that you can't really make a transistor much smaller than about 30nm. The contacted gate pitch (for all intents and purposes this is the 'size' of a transistor) actually only decreased 50% from 28nm to 7nm (from 117nm to 64nm).