Colin Scott, a Berkeley researcher, updated Jeff Dean’s famous Numbers Everyone Should Know with his Latency Numbers Every Programmer Should Know interactive graphic. The interactive aspect is cool because it has a slider that let’s you see numbers back from as early as 1990 to the far far future of 2020.

It's interesting to play with the numbers and see where different latency hit their floor.

Latency dominates most apps now, but it seems like that's always been the case.