Life's a bitch and she's got me pussy whipped.
The major problem is that without assuming that others are like you, you have nothing to assume, which really doesn't help in deciding what to do.
Socionics help in that it actually describes somewhat what the differences are, rather than just asking what people make fewer decisions because they don't have enough information.
"Come to think of it, there are already a million monkeys on a million typewriters, and the Usenet is NOTHING like Shakespeare!"
- Blair Houghton