Moore’s law was proposed back in 1975 that the density of transistors on a chip would double every two years.
And while this was never based on empirical data, and is considered more an “observation,” Gordon Moore, one of the founders of Fairchild Semiconductor, has been uncannily correct.
The chart on the bottom shows the history. It is pretty amazing.
The chart on top shows was intel is planning. The 7, 4 and 3 represent nanometers which are one-billionth of a meter. The 20A and 18A represent Angstroms which are tenths of a nanometer. An Angstrom is generally considered to be about the width of one atom.
So we keep going and going (rather, Intel keeps going…).