The Myth of Compatibility

This last two weeks' posts have been reflecting on thoughts about Family Systems Theory, which we've been reading about in my Marriage & Family Counseling class. Go back and read the context if you're just now happening across these posts...

There is a widespread assumption that the key to a successful marriage is finding the "right match." A more accurate perspective is that it is not the ingredients of the mixture but the emotional crucible into which they are poured."

"Emphasizing compatibility is also misleading because it tends to isolate the marriage relationship from the two emotional fields in which it is always situated-- the nuclear family and the extended families of both partners."

How do these ideas reflect on eharmony.com; match.com?