[[!comment format=mdwn
 username="https://www.google.com/accounts/o8/id?id=AItOawn3p4i4lk_zMilvjnJ9sS6g2nerpgz0Fjc"
 nickname="Matthias"
 subject="Why different versions?"
 date="2014-09-23T10:59:32Z"
 content="""
Why are there different versions for 10.7, 10.8, 10.9 anyway? Is it not possible to produce an executable compatible with all these? I mean, it's the same architecture and executable format, not? I guess there has to be a reason, explanations are welcome :-)
"""]]