> Windows key is a recent addition Looks like it was introduced in 1994; unix epoch starts @ 1 January 1970; so we've had a Windows key for ~55% of the existen

> Windows key is a recent addition Looks like it was introduced in 1994; unix epoch starts @ 1 January 1970; so we've had a Windows key for ~55% of the existence of standard epoch time. The Model M was introduced ~1984; so Windows key has been around for ~75% of it's lifespan.