Att använda For istället för Because.

You can see the registers that use of "for" is normally found in in contemporary British English (per million words):

SPOKEN 0.0
FICTION 0.4
NEWSPAPER 0.7
ACADEMIC 0.6
MISC 0.5

And in American English registers:

SPOKEN 0.1
FICTION 0.4
MAGAZINE 0.2
NEWSPAPER 0.1
ACADEMIC 0.3

As far as Time magazine is concerned, that use seems to have had it's ups and downs of popularity over the decades:

1920s 0.5
1930s 0.5
1940s 0.3
1950s 0.5
1960s 0.2
1970s 0.2
1980s 0.0
1990s 0.1
2000s 0.5