Hacker News Reader

While the 3.5mm headphone jack is only ~70 years old [1], the quarter inch jack has it's roots in the late 1870's [2].

I went from "they had it in the 30s?" to "omg 1950 was 70 years ago!"

It is funny how long the approximation "subtract from 2000" to keep math simple sticks.

When you find a phone with a quarter inch jack I'll concede the point :)